ARTICLE https://doi.org/10.1057/s41599-023-02273-x OPEN The effect of spiritual leadership on proactive customer service performance: The roles of psychological empowerment and power distance 1234567890():,; Delong Zhu1, Waseem Bahadur2,3 & Muhammad Ali4 ✉ Scholars have consistently demonstrated that spiritual leadership yields positive outcomes for employees. However, it is not clear how spiritual leadership influences proactive customer service performance. The purpose of this research is to develop a model, grounded in social cognitive theory, to identify why and when spiritual leadership promotes proactive customer service performance. Specifically, the focus is on how spiritual leadership through employee psychological empowerment facilitates proactive customer service performance under the condition of power distance. The empirical analysis, conducted through regression analysis using the PROCESS macro, is based on questionnaire data from 263 leaders and employees in the hospitality industry. Findings reveal that spiritual leadership has a positive effect on boosting employees’ psychological empowerment, subsequently nurturing their engagement in proactive customer service performance. Moreover, it is found that within an environment of low power distance, the favorable impact of spiritual leadership on proactive customer service performance is amplified, as employees are more inclined to challenge authority and norms and engage in proactively solving problems related to customer service. Key implications suggest scholars and managers ways to enhance proactive customer service performance. 1 School of Economics and Management, Hubei University of Automotive Technology, 442002 Shiyan, Hubei, China. 2 International Business College, Jiangxi Institute of Applied Science and Technology, Nanchang, Jiangxi Province, China. 3 College of International Cooperation and College of Business, Xi’an International University, Xi’an, Shaanxi, China. 4 Federal Urdu University of Arts, Science, & Technology, Islamabad, Pakistan. ✉email: Muhammad.ali.quaid@gmail.com HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x 1 ARTICLE HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | https://doi.org/10.1057/s41599-023-02273-x L Introduction eadership is a cornerstone in enhancing the service performance of employees in the hospitality industry (Jiang et al., 2020; Kao et al., 2015). Research has demonstrated that value-based leadership approaches, which focus on symbolic leader behavior, ideological and moral values, emotional feelings, and intellectual stimulation, are particularly important within the hospitality industry (Huertas-Valdivia et al., 2022; Tariq, Abrar et al., 2023). Among these, spiritual leadership stands out as one important value-based leadership approach (Avolio et al., 2009). Spiritual leadership refers to the values, attitudes, and behaviors of leaders that intrinsically inspire employees through elements like vision, hope/faith, and altruistic love, in turn creating a sense of meaningfulness, the ability to make a difference, and a feeling of being understood and valued by the leader (Fry, 2003; Fry et al., 2005). This leadership style is widely regarded as a positive leadership approach because it is conducive to improving the service performance of employees (Usman et al., 2021). Prior research has observed favorable connections between spiritual leadership and various employee behaviors, including entrepreneurial behavior (Usman et al., 2021), employee voice behavior (X. Yang et al., 2019), organizational citizenship behavior (Pandia et al., 2023), customer-oriented boundary-spanning behavior (Bayighomog and Araslı, 2019), job performance (F. Yang et al., 2019), and work engagement (Wu and Lee, 2020). However, the specific influence of spiritual leadership on proactive customer service performance among frontline service employees in the hospitality industry remains unclear. proactive customer service performance can serve as a competitive advantage by improving customer satisfaction (Yan et al., 2023). Thus, it is crucial to investigate how spiritual leadership influences proactive customer service performance. The purpose of this study is to examine how spiritual leadership affects proactive customer service performance in the hospitality industry and to uncover key mechanisms and boundary conditions underlying spiritual leadership’s impact on proactive customer service performance. To address the above research gaps and accomplish the set objectives, this study seeks to address the following research questions. a. How does spiritual leadership contribute to the improvement of proactive customer service performance in the hospitality industry? b. What mediates the spiritual leadership influence on proactive customer service performance? c. What moderates the relationship between spiritual leadership and proactive customer service performance? To answer these questions, we examine the mediating mechanism by which spiritual leadership affects proactive customer service performance, which refers to an employee’s extra role efforts to serve a customer through self-started behavior, longterm-oriented orientation, and persistent service behavior (Ali and Khan, 2023). Building on social cognitive theory (Bandura, 1986), we identify psychological empowerment as a pathway through which spiritual leadership influences proactive customer service performance. psychological empowerment refers to the cognitive state in which individuals perceive themselves as having control over their work and the resources necessary to complete it, as well as a sense of meaning and purpose in their work (Spreitzer, 1995). Previous research has shown that psychological empowerment can enhance customer service in hospitals (D’Innocenzo et al., 2016). Another study shows that psychological empowerment is related to the proactive service performance of employees (Dong et al., 2022). Therefore, our study suggests that by promoting psychological empowerment, spiritual leaders are likely to foster more proactive customer service. 2 The social cognitive theory further suggests that cultural factors, such as power distance, can influence the behavior of individuals in response to leadership (Bandura, 1986; Vuong and Hieu, 2023). Therefore, understanding the impact of spiritual leadership on proactive customer service performance requires considering the role of power distance. Power distance refers to the degree to which individuals in a society accept and expect an unequal distribution of power (Hofstede, 1980). When power distance is high, employees may be more likely to conform to the expectations of their spiritual leader and may be less likely to express their proactive customer service due to fear of challenging authority (Guo et al., 2022). However, some studies have found that spiritual leadership can still have a positive impact on proactive customer service in high power distance cultures. For instance, Hu et al. (2018) found that when supervisors provide a supportive environment for proactive customer service, it can reduce uncertainty and promote proactive customer service even in high power distance cultures. Similarly, Zhang and Bartol (2010) found that in a high power distance culture, spiritual leadership can still promote proactive customer service by encouraging employees to develop their own unique ideas and constructively express them. Yet, high power distance is considered a constraint for the proactive behavior of employees (Guo et al., 2022). Therefore, when examining the relationship between spiritual leadership and proactive customer service performance, it is valuable to consider the moderating role of power distance. While high power distance cultures may present challenges to promoting proactive customer service performance, creating a supportive and empowering environment can help reduce uncertainty and promote proactive customer service performance, even in these contexts. Based on social cognitive theory (Bandura, 1986), this study makes two important contributions to the literature on spiritual leadership and proactive customer service performance. Firstly, it expands the existing leadership literature in the hospitality industry by investigating the underlying mechanism by which spiritual leadership impacts their followers’ proactive customer service performance, with a focus on psychological empowerment. By identifying psychological empowerment as a facilitator of proactive customer service performance, this study deepens our comprehension of why spiritual leadership can promote proactive customer service performance. Secondly, drawing on social cognitive theory (Bandura, 1986), we elucidate the moderating role of power distance between spiritual leadership and proactive customer service performance. In doing so, we answer the calls to investigate cultural factors i.e. power distance on employee’s response to leadership behavior (Ali et al., 2020; Amundsen and Martinsen, 2014; Hu et al., 2018; Vuong and Hieu, 2023). Thus, we enhance our knowledge of why and when spiritual leadership influences the customer-related proactive behavior of employees. In summary, the theoretical model presented in Fig. 1 contributes to the leadership literature in the hospitality industry by investigating mechanisms and conditions under which spiritual leadership influences proactive customer service performance, illuminating the mediating role of psychological empowerment and moderating the role of power distance. Theoretical framework and hypotheses The framework of spiritual leadership and proactive customer service performance based on social cognitive theory. Social cognitive theory is a widely used theoretical framework in the study of organizational behavior (Dennerlein and Kirkman, 2022; Liang and Gu, 2016; Lin and Chang, 2018; Marescaux et al., 2021). The theory posits that individuals shape their behaviors HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | https://doi.org/10.1057/s41599-023-02273-x ARTICLE Power distance Proacve customer service Performance Spiritual leadership Psychological empowerment Fig. 1 Hypothesized model. This diagram illustrates the relationships between four crucial factors: spiritual leadership, psychological empowerment, power distance, and proactive customer service performance. The direction of the relationships among these factors is indicated by arrows. through their experiences and are influenced by their environment (Bandura, 1986). In the context of leadership, social cognitive theory suggests that leaders and followers interact dynamically, and leader behavior and socio-structural factors impact follower attitudes and behaviors (Fry et al., 2011). In our study, we apply social cognitive theory to understand the mechanism by which spiritual leadership influences proactive customer service performance. Specifically, we posit that spiritual leadership enhances proactive customer service performance through its impact on employees’ psychological empowerment, which refers to individuals’ perceptions of their control over work and the resources necessary to complete it, as well as their sense of meaning and purpose in their work (Spreitzer, 1995). psychological empowerment has been shown to positively affect proactive customer service performance in prior research (Rahmatika et al., 2022; Zhang and Begley, 2011). Research has found that spiritual leadership enhances employees’ self-efficacy (Usmanova et al., 2021), it can also influence psychological empowerment because both self-efficacy and psychological empowerment are related to belief in one’s capability to influence outcomes. According to the basic tenant of social cognitive theory, self-efficacy significantly shapes individual behaviors and experiences. Self-efficacy denotes an employee’s conviction in their abilities to complete tasks and achieve objectives (Bandura, 1997). Self-efficacy is likely to promote the psychological empowerment of employees by bolstering belief in their capabilities, competence, and mindfulness of work, hence promoting employee determination to make impactful contributions to the organization. Furthermore, social cognitive theory suggests that individuals learn by observing others, and thus, employees may learn about proactive behaviors from observing their spiritual leaders’ behavior of encouraging followers to take initiative (Bandura, 1986). According to social cognitive theory (Bandura, 1986), power distance may affect individuals’ self-efficacy beliefs, which in turn influence their behavior. Individuals in high power distance cultures may have lower self-efficacy beliefs due to a lack of access to resources and opportunities, limited control over their environment, and a sense of dependence on those in power (Hu et al., 2018). This may lead to lower motivation to engage in proactive behaviors, as they may feel that their actions will not be recognized or valued. Individuals in high power distance cultures may also be less likely to engage in observational learning through vicarious experiences, as they may perceive those in power as having different capabilities and opportunities (Zhang and Yang, 2021). However, research suggests that cultural values can be moderated by leadership behaviors (Jeon and Choi, 2020). For instance, spiritual leadership can promote a positive climate for proactive customer service by fostering employees’ psychological empowerment, which can enhance their self-efficacy beliefs (Chen and Hou, 2016). Therefore, spiritual leadership in high power distance cultures can play a critical role in enhancing employees’ proactive customer service by promoting a supportive and empowering environment that can enhance their self-efficacy beliefs and promote their observational learning experiences. Overall, the social cognitive theory provides a valuable framework for understanding the motivational processes that connect contextual factors and proactive customer service performance. By focusing on psychological empowerment and the observation and modeling of behaviors, hospitality organizations can promote a proactive culture and enhance proactive customer service performance. Influence of spiritual leadership and proactive customer service performance. Spiritual leadership is one of the important valuebased leadership approaches that has contributed to the advancement of workplace spirituality research and practice (Djaelani et al., 2021; Fry et al., 2005). Scholars have investigated the role and contributions of spiritual leadership on employees in a variety of organizational contexts, including banking and finance (Afsar et al., 2016), education (Saeed et al., 2022), construction (Ofori, 2008), and hospitality (Bayighomog and Araslı, 2019). Scholars have found that spiritual leadership positively influences employee’s well-being (Chen et al., 2013), work engagement (Huang, 2022), self-efficacy (Chen and Li, 2013), intrapreneurial behaviors (Usman et al., 2021), creativity (Jeon and Choi, 2020), innovation (Liu et al., 2023), and performance (F. Yang et al., 2019). The current study expands the literature by investigating the influence of spiritual leadership on proactive customer service performance. According to (Ali and Khan, 2023) proactive engagement in finding solutions for problems and queries of customers to meet and exceed their service expectations by an individual or a team is what is referred to as proactive customer service. Previous studies have suggested that a variety of elements, such as an individual’s HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x 3 ARTICLE HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | https://doi.org/10.1057/s41599-023-02273-x work experiences, personality traits, and organizational context, can influence and lead to proactive customer service performance (for a review see Yan et al., 2023). Leadership is regarded as a critical factor in determining proactive customer service performance, and it is one of the personal and organizational factors that can influence it (Wang, 2019). Specifically, numerous studies have found a positive correlation between spiritual leadership and proactive customer service performance in a range of organizational contexts and cultures (Jeon and Choi, 2021; Yang et al., 2021). Bayighomog and Araslı (2019) propose that spiritual leaders can positively impact employee’s service behavior by encouraging intrinsic value toward accomplishing goals, highlighting the connection between the followers’ efforts and goal attainment, and creating a strong sense of personal commitment toward a shared vision, mission, and organizational goals among both the leader and the followers (Wang et al., 2019). By promoting innovative thinking, involving people in decision-making processes, establishing loyalty, and recognizing and valuing each person’s unique needs to further their own personal growth and advancement, spiritual leaders can affect the proactive customer service of their followers. (Afsar and Badir, 2017; Basiony and Atalla, 2021; Williams et al., 2017). By inspiring their followers to seek novel approaches for tackling obstacles and difficulties, and identifying with the unique needs of their followers, spiritual leaders can effectively stimulate their followers’ proactive customer service, fostering greater engagement in their work and causing elevated levels of organizational commitment (Hunsaker, 2022). Prior research has provided evidence to support the notion that employees who are encouraged to participate in the decision-making process (Pawar, 2014), and whose leaders demonstrate high levels of compassion for followers (Fry, 2003), support, and concern for their development, tend to exhibit greater levels of innovative behavior towards their job (Ali and Park, 2016; Gu et al., 2018). Despite the conceptual and empirical associations between spiritual leadership and proactive customer service performance, scant attention has been given to examining the underlying mechanisms by which spiritual leaders stimulate their followers’ proactive customer service (Lin & Lyau, 2011). Within this current study, we explore the potential incorporation of psychological empowerment as a mediating mechanism within the connection linking spiritual leadership and proactive customer service performance. Furthermore, we explored the possibility of the functioning of the power distance orientation of an organization or a culture at large, as a moderator in the linkage between spiritual leadership and proactive customer service performance, recognizing that a diversity of distinct processes may underlie spiritual leadership. Hypothesis 1: Spiritual leadership is positively associated with proactive customer service performance. The mediating role of psychological empowerment between spiritual leadership and proactive customer service performance. As outlined by Spreitzer (1995), psychological empowerment is defined as a state where individuals experience a greater internal drive to perform their tasks. This state is characterized by four beliefs that reflect how individuals perceive their work roles: competence, impact, meaningfulness, and self-determination. Competence denotes a person’s belief in their capacity to execute a task successfully. This belief is based on a sense of self-efficacy or personal mastery, and it involves feeling capable and confident in one’s skills and abilities (Bandura, 1986). In the context of empowerment, “impact” refers to both, the extent to which an individual believes they can affect organizational outcomes through their job and the degree to which their work is meaningful and 4 helps them achieve the task’s objectives. “Meaning” refers to the weight that a person accords a task based on their own criteria, whereas “self-determination” denotes to a person’s sense of independence when making choices regarding their work. Social cognitive theory similarly underscores the significance of empowerment in creating commitment to an organization’s objectives. Spiritual leaders can influence proactive customer service performance by fostering a sense of psychological empowerment in their followers. This includes creating a work environment where employees feel competent, and have a sense of autonomy, meaningfulness, and impact. Through this, spiritual leaders can inspire and motivate their employees to be more proactive and engaged in their work (Fry, 2003). Followers of spiritual leaders are likely to have greater feelings of psychological empowerment and to be more committed to the organization (Jung and Sosik, 2002; Sarros et al., 2008). Through their charisma and vision, spiritual leaders inspire their followers to identify with the organization’s purpose and strive towards shared goals, imbuing their work with greater meaning and a sense of higher purpose. This creates an environment in which followers feel empowered, autonomous, and confident in their abilities to contribute to the organization (Wong et al., 2008). The research work by (Fry et al., 2005; Mitroff and Denton, 1999) has shown that leaders who exhibit high moral standards, values-based vision, and a sense of calling inspire a sense of meaning and purpose in their followers, leading to increased psychological empowerment and motivation. Spiritual leaders foster intellectual stimulation among their followers by inciting them to scrutinize their convictions and assumptions, and by encouraging them to engage in imaginative and innovative approaches to solving problems. This method enables followers to broaden their capacity, attain higher levels of empowerment, and increase their motivation to perform work (F. Yang et al., 2019). These leaders encourage innovation in their followers by coaching and mentoring them to help them become more responsible workers and grow as leaders. They also use feedback, encouragement, and support to help their followers feel more self-sufficient, autonomous, and deserving of respect. (Usmanova et al., 2021). Spiritual leadership has been shown to foster proactive customer service performance through individualized consideration, as leaders listen attentively to the needs of followers for growth and development, act as mentors or coaches, and encourage them to take on more responsibility and challenges to reach their highest potential (Fry et al., 2005; Zhang and Zhou, 2014). Through providing greater decision latitude and autonomy in the workplace, spiritual leaders create a work environment that empowers their followers, leading to higher levels of proactive customer service and innovation (Rego et al., 2012; Sessions et al., 2020). We contend that employees who possess the feeling of empowerment are more expected to possess greater self-efficacy and hence, possess the ability to show significant impact over their job and hospitality organizations in a further meaningful manner, leading to increased proactive customer service (Fry et al., 2011; Rego and Pina e Cunha, 2008). By feeling spiritually empowered, employees may be more expected to be involved in extra-role efforts, act autonomously, and exhibit heightened levels of commitment to their organization, as it provides them with a sense of fulfillment and purpose (Rego et al., 2019). Furthermore, those who derive a deeper sense of purpose in their work are more likely to have increased levels of energy to perform their tasks and exhibit higher levels of organizational citizenship behaviors (Kanungo, 1982; Shamir et al., 1993; Wrzesniewski et al., 1997). Drawing from the preceding arguments, we propose the following hypothesis: HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | https://doi.org/10.1057/s41599-023-02273-x Hypothesis 2: Psychological empowerment mediates the relationship between spiritual leadership and proactive customer service performance. The moderating role of power distance between spiritual leadership and proactive customer service performance. Power distance denotes the extent to which individuals, groups, or societies acknowledge disparities such as asymmetries in power, social standing, and affluence as inescapable, justified, or functional (Hofstede, 1980). Power distance is one key element of cultural values explained by Hofstede (1980). Individuals with high power distance tendencies exhibit deference towards authority figures, while those with low power distance orientations show less differentiation based on rank or social status (Begley et al., 2002; Wang, 2017). For instance, a high power distance belief indicates that an employee associates great authority and power with the leader. As such, employees with high power distance beliefs tend to demonstrate uncritical supportive behavior towards the leader and try not to engage in proactive behavior (Wang et al., 2023). On the other hand, employees with low power distance beliefs tend to speak up and engage in proactive behavior (Chiu et al., 2016). This study draws upon the conceptualization of power distance by Hobfoll (2001) to examine how employee beliefs about power distance influence the relationship between spiritual leadership and proactive customer service performance. In the absence of power distance constraints, the correlation between spiritual leadership and proactive customer service performance is positive, which includes various aspects such as the enhancement of participation safety, proactivity of teams in the pursuit of progress and novelty, and the initiation of collective contemplation on different routes of action (Daniels and Greguras, 2014). Notwithstanding, the favorable association between spiritual leadership and proactive customer service performance may exhibit variations contingent on power distance disparities. In contexts characterized by low power distance, the conferment of power upon employees could be markedly augmented by the authority (Hu et al., 2018). In low power distance contexts, team members tend to interact with each other without concerns over hierarchical rank, professional identity, or gender (Hofstede, 1980). Low power distance could potentially promote an inclination among team members to express their opinions (Hui et al., 2004), make informed decisions, and feel secure sharing ideas with each other, despite the varying hierarchical statuses of team members (Yang et al., 2017). Therefore, within contexts of low power distance, the impact of spiritual leadership on proactive customer service performance is amplified. In contrast, when power distance is high, the decision-making process is more centralized, and individuals tend to strictly adhere to the established organizational hierarchy rather than proactively taking the initiative to act (Hofstede et al., 2005; Zhang and Begley, 2011). Despite their inclination to unconditionally follow leader instructions, followers with high power distance orientations may find it difficult to reconcile with leader requests to reevaluate work assumptions or contemplate new ways of performing their jobs. This conundrum arises from the followers’ expectation that leaders must furnish all the necessary guidance and ideas for task completion, while at the same time requesting such reevaluation or rethinking goes against this expectation (Hu et al., 2018; Kirkman et al., 2009). In such contexts, the correlation between spiritual leadership and proactive customer service performance is less pronounced. Additionally, employees who possess a lower preference for power distance are more inclined to experience greater feelings of ARTICLE gratitude toward their spiritual leader (Lin et al., 2018). This inclination stems from the fact that, in a low power distance context, these employees perceive themselves as equals to their leader in both status and capabilities (Hu et al., 2018). Consequently, they tend to place more trust in their own abilities, which emboldens them to proactively go beyond the conventional methods of task execution. This proactive approach leads them to seek out ways to enhance the customer experience through proactive service behaviors. Drawing from the preceding arguments, we propose the following hypothesis: Hypothesis 3: Power distance moderates the relationship between spiritual leadership and proactive customer service performance. Methods Study settings and data collection. To collect data for this study, a sample population of 325 frontline employees and 45 managers working hotel chain based in two major cities (Xian and Wuhan) in China was selected. The rationale behind choosing this specific hotel chain stems from several key factors. Firstly, the chain comprises four-star hotels, which are consistently rated highly for their services by customers on an online booking platform. This establishes a foundation of excellence in customer service within the hospitality organization. Furthermore, the selection was influenced by the geographical locations of the hotels, as Xian and Wuhan attract a diverse range of customers with varying local and foreign backgrounds. This diversity leads to a wide spectrum of service requirements and perceptions. Consequently, the hotel chain provides an ideal context for investigating the impact of spiritual leadership on proactive customer service performance. Moreover, this hotel chain uses Western management practices to improve the efficiency of hotel operations and service performance. Managers are in charge of promoting the development of novel and useful ideas by their following—employees to further organizational development and improve customer service. Therefore, a collaborative environment exists in which frontline employees work with each other and their supervisors to engage in proactive behavior in solving problems faced by customers and improving proactive customer service performance. We first contacted the HR manager of the hotels and requested the voluntary participation of their employees in the survey. We provided them with a brief explanation of the study and assured them of the privacy of their organization and employees. We used a random sampling method in which HR managers helped us randomly select employees from the employee number list. We used a simple random sampling method because it provides an unbiased sample to test the model (Siegel and Wagner, 2022). To collect data, two types of questionnaires were distributed to the 45 direct managers of the sample employees (the direct managers of the sample employees hold a crucial responsibility encompassing the guidance of employees, effective supervision of employee tasks, and the pivotal role of ensuring optimal performance across frontline services) and randomly selected 325 frontline employees via the company’s internal mail system. Each questionnaire included a statement for the respondents, including a request for voluntary participation and stating that their responses would be kept confidential and would not be shared with anyone. Subsequently, each of the randomly chosen employees was provided with the opportunity to decide whether to participate or not, without any obligation. This method allows us to mitigate potential biases that might arise if participants were self-selected, ensuring that our findings can be generalized. A unique identification number was used for each respondent to match the leader and employee responses. Leaders were asked to rate the HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x 5 ARTICLE HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | https://doi.org/10.1057/s41599-023-02273-x proactive customer service performance via the manager questionnaires. Conversely, frontline employees were requested to fill out the subordinate questionnaires, which included items related to their manager’s spiritual leadership behaviors, their own psychological empowerment, and power distance. To ensure that the responses from the frontline employees and ratings from their managers could be matched, a unique identification code was assigned to each set of questionnaires. In response to questionnaires distributed to managers and frontline employees, 33 managers and 270 subordinates provided their responses, yielding response rates of 73% and 83%, respectively. After removing the unmatched and incomplete questionnaires, a total of 263 matched manager-supervisor dyads provided usable data for this study. Among the responding managers, 33% were males, 73% were aged above 36, and 90% had a master’s degree with an average tenure of 10 years in the same organizational tenure. Among employee respondents, the sample was comprised of 59% males, 70% aged between 21 and 40 years, 95% have a master’s degree and most had 13–18 months with the same manager. Measures. All survey items were taken from existing measures validated in the literature. Because the context of the study was Chinese employees, therefore, we used a translation and back translation approach to all items in Chinese (Brislin, 1980). All items were rated on a 7-point Likert scale ranging from 1 for strongly disagree to 7 for strongly agree. Spiritual leadership. We used a 9-item scale adopted from Pawar (2014) to measure the spiritual behavior of leadership rated by employees (α = 0.97). A sample item of this measure is “My supervisor expresses his/her respect for our members’ values.” Psychological empowerment. Psychological empowerment was measured using a four-dimensional scale consisting of 12 items adopted from Spreitzer (1995) (α = 0.76). Four dimensions include (1) meaning (A sample item of this dimension is “The work I do is very important to me”), (2) competence (A sample item of this dimension is “I am confident about my ability to do my job”), (3) self-determination (A sample item of this dimension is “I have significant autonomy in determining how I do my job”), and (4) impact (A sample item of this dimension is “My impact on what happens in my department is large”). Power distance. We used 6 items measure of power distance adopted from Begley et al. (2002) which was initially taken from the study by Dorfman and Howell (1988) (α = 0.96). A sample item of this measure is “It is frequently necessary for a manager to use power and authority when dealing with subordinates”. Proactive customer service performance. We measured proactive customer service performance using a 7-item scale adopted from Rank et al. (2007). Managers of the frontline employees were requested to rate the proactive customer service performance of their subordinates (α = 0.96). Leader ratings are considered a valid approach to measure the performance of employees (Ali, Khan et al., 2022; Cao et al., 2021; Khan et al., 2019; Nauman et al., 2022). A sample item of this measure is “This employee actively creates partnerships with other service representatives to better serve customers.” Control variables. Literature suggests that the demographic characteristics of the employees can influence their job-related attitude and performance (Ali, Ali et al., 2022; Bao et al., 2020; Cao and Ali, 2018; Katz-Navon et al., 2020; Khan and Ali, 2018; 6 Masood et al., 2021; Pitafi et al., 2018; Wang et al., 2022). Accordingly, to generate robust results, we controlled employees’ age, education, experience, and tenure in the organization. Analysis and results Analysis approach. We adopted a two-step approach to analyzing the model, in line with previous studies (Bahadur et al., 2019; Cao et al., 2019; Islam et al., 2020; Raza et al., 2020). In the first step, we assessed the reliability and validity of the data. In the second step, we performed a regression analysis using the PROCESS macro to test the hypothesized relationships of this study. This two-step approach, which was proposed by(Hair et al., 2011), is widely adopted by scholars in leadership and information systems (Bahadur and Ali, 2021; Tariq, Almashayekhi, et al., 2023). We chose the PROCESS macro, based on ordinary least square regression, to estimate path coefficients over structural equation modeling (SEM) due to its ability to overcome conceptual and statistical limitations associated with traditional mediation and moderation methods (Hayes et al., 2017). The PROCESS macro employs bootstrapping, which has an edge over traditional techniques as it adjusts for non-normality in the distribution of mediated effects (Preacher et al., 2007). Therefore, recent research supports the suitability of the PROCESS macro for models involving mediation and moderation (Bahadur and Ali, 2021; Tariq, Almashayekhi et al., 2023). However, it’s important to note that choosing the PROCESS macro over SEM doesn’t inherently provide a distinct advantage. For instance, Hayes (2013) found similar statistical estimates using both PROCESS and an SEM program. Preliminary analysis. We performed confirmatory factor analysis to test the validity of the measures. According to previous research, a good fit to the data is indicated by the following criteria: a χ2/df value below 2.5, SRMR value below 0.08, RMSEA value below 0.06, AGFI value above 0.80, and CFI, IFI, and NNFI values over 0.90 (Bentler and Bonett, 1980; Gefen et al., 2000; Hu and Bentler, 1999; Kenny et al., 1998). The results reveal a reasonable value of fit indices (χ2 = 721.03, df = 413, SRMR = 0.04, AGFI = 0.82, CFI = 0.96, IFI = 0.96, and NNFI = 0.91, RMSEA = 0.05). Reported in Table 1, the results further reveal the loadings of all items were above 0.70 thresholds (Chin, 1998). Furthermore, the values of composite reliability, and Cronbach’s alpha were above the acceptable 0.70 (Nunally and Bernstein, 1994), and the average variance extracted (AVE) was all above the acceptable value of 0.05 (Hu and Bentler, 1999). Results also reveal that values of Cronbach’s alpha for all variables were above 0.70. These results provide evidence of the convergent validity of the measures. Furthermore, Table 1 displays that the square root of AVEs was all greater than correlations among the related constructs. These results suggest a satisfactory discriminant validity of measures (Fornell and Larcker, 1981). Table 1 presents the correlations, reliabilities, means, and standard deviations of all variables of this study. As a piece of initial evidence, correlations reveal that as hypothesized, spiritual leadership was positively related to proactive customer service performance. Hypothesis testing. To test the model of this study, we followed a three-step analytical procedure using PROCESS macro (Hayes, 2017). First, we tested the direct effect of the independent variable on the outcome variable (Hypothesis 1). Second, we tested the mediation hypothesis (Hypothesis 2). Third, we tested the moderation hypothesis (Hypothesis 3). HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | https://doi.org/10.1057/s41599-023-02273-x 0.07 −0.03 −0.09 −0.23** −0.42** −0.11 −0.09 0.96 0.79 0.96 1.30 2.87 Square roots of AVEs in diagonal cells. *p ≤ 0.05, **p ≤ 0.01. 0.01 0.26** 0.05 0.24** 0.11 −0.02 0.05 0.01 −0.06 0.01 0.67 1.20 3.99 3.61 0.92 0.96 0.80 0.87 0.92 0.96 0.01 −0.01 0.13* 0.89 0.09 0.80 0.08 0.01 0.05 0.17** 0.90 0.28** 0.84 0.25** 0.14* 0.84 0.34** 0.12 0.123* −0.05 −0.212** −0.03 −0.14* −0.04 0.01 0.09 −0.05 −0.05 0.87 0.93 0.84 1.38 0.76 0.78 4.41 3.93 3.82 0.87 0.93 0.84 0.70 0.82 0.64 0.05 0.10 0.09 – −0.16* – −0.03 −0.05 −0.04 0.02 −0.08 −0.03 – 0.97 – 0.71 0.78 0.86 2.28 4.16 – 0.96 – −0.06 – −0.02 −0.06 – – – 2.43 2.31 2.79 1. Education 2. Age 3. Organizational tenure 4. Experience 5. Spiritual leadership 6. Meaning 7. Competence 8. Selfdetermination 9. Impact 10. Proactive customer service performance 11. Power distance – – – −0.03 0.89 The rationale behind Hypotheses 1 and 2 suggests a direct effect of spiritual leadership on proactive customer service performance and an indirect effect of spiritual leadership on proactive customer service performance via psychological empowerment. We, therefore, used Model 4 of PROCESS macro in SPSS to test these hypotheses. Table 2 presents the results concerning Hypotheses 1 and 2. As Hypothesis 1 predicted, spiritual leadership was positively associated with proactive customer service performance (B = 0.19, p < 0.01). Thus, Hypothesis 1 is supported. Furthermore, results reveal that spiritual leadership was positively related to psychological empowerment (B = 0.31, p < 0.001). In addition, psychological empowerment significantly influenced proactive customer service performance (B = 0.20, p < 0.01), confirming Hypothesis 2 (Baron and Kenny, 1986). Finally, the results of the bootstrapping further supported the mediation effect of psychological empowerment because with a 20000 bootstrapping sample upper limit and lower limit of 95% bootstrapped confidence intervals did not include zero (0.02, 0.12). The above results provided support for Hypotheses 1 and 2 by revealing that spiritual leadership is positively associated with proactive customer service performance (Hypothesis 1) and psychological empowerment mediates the indirect relationship between spiritual leadership and proactive customer service performance (Hypothesis 2). Concerning moderating Hypothesis 3, we expected that power distance would moderate the positive relationship between spiritual leadership and proactive customer service performance. Before testing the moderating effect, we mean-centered the independent variable and moderating variable to generate robust moderation results (Aiken and West, 1991). To test Hypothesis 3, we tested Model 1 of PROCESS macro in SPSS. As shown in Table 2, the interaction effect was significant (B = −0.11, p < 0.05), providing support for Hypothesis 3. To further probe moderating results, we followed Aiken and West (1991) and plotted the interaction effect presented in Fig. 2. Simple slop test results presented in Table 3 reveal that power distance significantly moderated the relationship of spiritual leadership with proactive customer service performance in a way that at a low level of power distance, the relationship of spiritual leadership with proactive customer service performance was strongest (B = 0.43, p < 0.001) rather than at higher level power distance (B = 0.21, p < 0.01). These results provide further support for Hypothesis 3. 0.00 0.93 11 10 9 8 7 6 5 4 3 2 1 Cronbach’s alpha – – – AVE CR Standard deviation 0.58 0.9 1.13 Mean Variables Table 1 Mean, standard deviation, reliability statistics, and correlation coefficient of variables. ARTICLE Discussion and implications Our study aimed to investigate the connection between spiritual leadership and proactive customer service performance, with a particular focus on the impact of psychological empowerment and power distance. Spiritual leadership emphasizes meaning and values, which can foster a sense of purpose and fulfillment in employees (Fry, 2003; Fry et al., 2005). This can lead to greater job satisfaction, which consequently leads to higher levels of proactive customer service. Furthermore, spiritual leaders often encourage followers to question assumptions and to think critically about their work, which can also promote proactive customer service. The findings of this study offer valuable implications for scholars and managers alike. Theoretical implications. This study makes important contributions to the theory. Firstly, the findings of this study explain the factors underlying proactive customer service performance when there is spiritual leadership. In particular, spiritual leadership prioritizes the significance of work-related tasks for their followers, and as per our initial findings, such leaders may establish their HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x 7 ARTICLE HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | https://doi.org/10.1057/s41599-023-02273-x Table 2 Results of hypotheses testing. Outcome Proactive customer service performance Psychological empowerment Variables B B SE t SE Constant −0.16 0.41 −0.40 −0.20 0.40 Education 0.01 0.10 0.06 0.15 0.10 Age 0.02 0.05 0.39 0.04 0.07 Organizational tenure 0.02 0.05 0.39 −0.07 0.05 Experience 0.04 0.08 0.50 −0.03 0.08 Spiritual leadership 0.19 0.06 2.92** 0.31 0.06 Psychological empowerment 0.20 0.06 3.13** Power distance Interaction effect Indirect of spiritual leadership on proactive customer service performance via psychological empowerment Effect SE LL-CI UL-CI 0.06 0.03 0.02 0.12 Proactive customer service performance t B SE t −0.50 1.49 0.55 −1.27 −0.38 5.22*** −0.37 0.08 0.03 0.02 0.01 0.32 0.42 0.11 0.07 0.05 0.08 0.07 −0.88 0.72 0.39 0.40 0.10 4.61*** 0.06 −0.11 0.07 0.05 0.85 −2.10* 95% CI-LL = lower limit at 95% confidence interval; 95% CI-UL = upper limit at 95% confidence interval; bootstrapping sample = 20,000; Interaction = spiritual leadership × proactive distance. *p ≤ 0.05; **p ≤ 0.01; ***p ≤ 0.001. Fig. 2 Moderating effect. Interaction effect of spiritual leadership and power distance on employee proactive customer service performance. Table 3 Conditional effect of spiritual leadership on proactive customer service performance at levels of power distance. Independent variable Moderator Dependent variable Effect SE t LL-CI UP-CI Spiritual leadership Spiritual leadership Spiritual leadership Power distance Power distance Power distance Proactive customer service performance Proactive customer service performance Proactive customer service performance 0.43 0.32 0.21 0.10 0.07 0.08 4.46*** 4.61*** 2.78** 0.24 0.18 0.06 0.61 0.45 0.36 95% CI-LL = lower limit at 95% confidence interval; 95% CI-UL = upper limit at 95% confidence interval; bootstrapping sample = 20,000. **p ≤ 0.01; ***p ≤ 0.001. followers’ capability and confidence by conferring them with psychological empowerment. This psychological empowerment leads to the development of a sense of self-worth and responsibility among followers, thereby enabling them to significantly influence their work roles and, consequently, foster elevated levels of affiliation with and loyalty to their organization. Thus, this study contributes to the understanding of the role spiritual leadership plays in promoting proactive customer service performance. 8 Secondly, although a large number of studies investigated the role of spiritual leadership in generating positive employee outcomes, previous research has not explored the mediating mechanisms connecting spiritual leadership and proactive customer service performance. This study provides insight into the mechanism through which spiritual leadership can influence proactive customer service performance. Indeed, spiritual leadership intrinsically motivates employees through vision, hope/faith, HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | https://doi.org/10.1057/s41599-023-02273-x and altruistic love, creating a sense of meaningfulness, and the ability to make a difference (Fry et al., 2005). This leadership approach can promote the support behavior of employees towards delivering high-quality service to customers (Bayighomog and Araslı, 2019). Empirical findings of this study reveal that spiritual leadership creates meaningfulness of employees, and service behavior that is valued by the leader, thus creating psychological empowerment which leads to enhanced proactive customer service performance. By enabling followers and facilitating their confidence in capabilities and competencies and motivation to go the extra mile in service delivery, spiritual leadership may provide opportunities for employees to make significant contributions to delivering quality services, leading to improved proactive customer service performance. Finally, by demonstrating that power distance moderates the association between spiritual leadership and proactive customer service performance, our study responds to the call to investigate cultural factors in explaining leadership influence on followers (Ali et al., 2020; Amundsen and Martinsen, 2014; Hu et al., 2018; Vuong and Hieu, 2023). Power distance can hinder the proactive behavior of employees (Guo et al., 2022). Therefore, the findings of this study suggest that in high power distance, employees may not be able to deliver high service benefits to hospitality organizations. While high power distance cultures may present challenges to promoting proactive customer service performance, creating a supportive and empowering environment can help reduce uncertainty and promote proactive customer service performance, even in these contexts. This underscores the need for scholars to recognize and account for cultural factors when investigating leadership and its outcomes. This suggests new directions for research on spiritual leadership and proactive customer service performance, including the need to examine the interplay between cultural dimensions, leadership, and proactive customer service performance in diverse contexts. Practical implications. The study’s findings have several practical implications for hospitality organizations. Firstly hospitality organizations may benefit from developing and implementing spiritual leadership practices that encourage employee empowerment. By fostering an environment where employees feel empowered to make decisions and take ownership of their work, hospitality organizations may see an increase in proactive customer service performance, as employees are more likely to feel invested in the work they do and motivated to come up with innovative solutions. Secondly, to encourage proactive customer service, hospitality organizations need to foster an environment that supports it. Further, if an organization has a high power distance culture, where authority and decision-making are concentrated in the hands of a few individuals, spiritual leadership may not be as effective in promoting proactive customer service performance. In such situations, hospitality organizations may need to consider modifying their culture to reduce power distance and create a more inclusive work environment. By doing so, they may be able to increase the effectiveness of spiritual leadership and foster more proactive service behaviors in the workforce. Additionally, hospitality organizations may need to provide training and resources to leaders to help them adopt spiritual leadership practices and empower their employees to achieve their full potential. Limitations and future recommendations. A critical limitation of the study is that the data was collected exclusively from Chinese employees. While China provides a suitable environment for studying power distance, it is important to note that Chinese culture has unique characteristics that differ from other cultures ARTICLE (Ali and Khan, 2023). As a result, the generalizability of our findings may be limited. Therefore, we encourage future researchers to replicate our study in Western cultures to provide a more comprehensive understanding of spiritual leadership, psychological empowerment, power distance, and proactive customer service performance in different cultural contexts. Furthermore, while we employed a sample size consistent with previous empirical studies, it is important to acknowledge the potential normality concerns that can arise from a relatively small sample size. To address these potential concerns, we utilized a bootstrapping approach to calculate indirect effects and establish 95% confidence intervals (Hayes, 2013). These results generated significant findings. However, we invite future scholars to employ larger sample sizes to yield more robust results. To better understand the mediating effects of psychological empowerment on the relationship between spiritual leadership and proactive customer service performance, future studies should incorporate experimental designs. Furthermore, research should examine the impact of unmeasured variables that could formally or informally impact the sense of empowerment, such as organizational structure, climate, and culture. By doing so, a more comprehensive understanding of the complexities involved in the relationship between spiritual leadership, psychological empowerment, and proactive customer service performance can be attained. An additional recommendation for future research is to consider alternative measures of spiritual leadership and proactive customer service performance. Although the measures used in the current study are widely accepted and validated, it is possible that other measures may yield different results or provide a more nuanced understanding of the relationship between spiritual leadership and proactive customer service performance. For example, using other measures of spiritual leadership, such as the spiritual leadership Inventory, may capture various dimensions of spiritual leadership that could have a more robust correlation with proactive customer service performance. Additionally, using alternative measures of proactive customer service performance, such as those that concentrate on different forms of proactive customer service or divergent thinking, may result in a more extensive comprehension of the relationship between spiritual leadership and proactive customer service performance. By incorporating a variety of measures, researchers can enhance their understanding of the intricate association between spiritual leadership and proactive customer service performance and identify the most efficient methods for encouraging proactive customer service in the workplace. While this study focused on the mediating role of psychological empowerment and the moderating role of power distance, we acknowledge that there could be other possible mediators and moderators. For instance, psychological capital, core-self evaluation, or employee voice behavior (Ali et al., 2020; Booth et al., 2020; Wu and Lee, 2020). Additionally, individual differences also play a crucial role in the leader–follower relationship (Lee et al., 2021; Song et al., 2018), such as mindfulness, and resilience, which could also influence employee cognitive processes and response to spiritual leadership. Furthermore, job-related factors, such as job satisfaction and job enrichment, also enhance employees’ risk-taking behavior and performance. An investigation of such potential mediators and moderators can further expand our understanding of the mechanisms and conditions that transfer spiritual leadership influence to proactive customer service performance. Thus, we invite future scholars to consider different variables to study the influence of spiritual leadership on proactive customer service performance. Finally, while it is indeed valuable to explore proactive customer service performance and the factors influencing it, a more valuable contribution would involve examining how HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x 9 ARTICLE HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | https://doi.org/10.1057/s41599-023-02273-x employees’ proactive customer service behavior impacts customer satisfaction and contributes to the success of service organizations. Therefore, we invite future scholars to delve into the outcomes stemming from employee proactive customer service performance. Conclusion In this paper, we used social cognitive theory to elucidate the mechanisms and conditions through spiritual leadership that influence employee service-related behavior. The empirical findings demonstrate that spiritual leadership influences psychological empowerment, thereby improving proactive customer service performance. 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Organ Behav Hum Decision Process 124(2):150–164. https://doi.org/10.1016/j. obhdp.2014.02.002 Zhang Y, Begley TM (2011) Power distance and its moderating impact on empowerment and team participation. Int J Hum Resource Manag 22(17):3601–3617. https://doi.org/10.1080/09585192.2011.560877 Zhang Y, Yang F (2021) How and when spiritual leadership enhances employee innovative behavior. Pers Rev 50(2):596–609. https://doi.org/10.1108/PR-072019-0346 Author contributions Regarding the contributions of all authors, DZ contributed to improving the article’s writing, addressing the reviewer’s comments, and supporting the data analysis. WB contributed to developing the theoretical model, data collection, and analysis. MA provided significant suggestions for improving the article and writing the original draft. Competing interests The authors declare no competing interests. Ethical approval We adhered to standard procedures and utilized validated measurement instruments. The study was conducted in accordance with the guidelines of the Declaration of Helsinki. Furthermore, we obtained approval from the Ethics Committee of the College of International Cooperation and Business, Xi’an International University. Informed consent On the first page of the questionnaire, we included information regarding the consent procedures and provided participants with details regarding the study’s objectives, and assured them of the confidentiality and anonymity of their responses. Then we asked for their voluntary participation in the survey. Participants responded to the survey measures voluntarily and without any obligation. Additional information Correspondence and requests for materials should be addressed to Muhammad Ali. Reprints and permission information is available at http://www.nature.com/reprints Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/. © The Author(s) 2023 HUMANITIES AND SOCIAL SCIENCES COMMUNICATIONS | (2023)10:792 | https://doi.org/10.1057/s41599-023-02273-x
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