Matakuliah
: D0194 / Perancangan Sistem Kerja & Ergonomi
PRODUCTIVITY
Pertemuan 2
1
Productivity is concerned with the efficient
utilization of resources (input provided) in
producing goods or services (output
generated)
Productivity Ratio =
Output produced per a given time period
Resource(s) consumed in production per a given time period
(Source : Kolarik in Creating Quality)
2
INPUTS
Knowledge
Skill
Experience
Information
Facilities
Machines
Tools
Materials
Supplies
Energies
OUTPUT
TRANSFORMATION
Goods
Services
3
With reference the process concept figure,
productivity associates quantities/costs of
resources at the input to product at the
output.
The transformation process determines our
level of productivity
4
(Source : Barnes, Motion and Time Study)
5
1. Partial productivity is the ratio of
output to one class of input
Example : material productivity is the ratio of output to
material input, labor productivity is the ratio of output to
labor input.
2. Total Productivity is the ratio of total
output to the sum of all input Factors
6
E = 100 x HeHc
• E = Percent Efficiency
• He = Standard Hours Earned
• Hc = Clock Hours on Job
Example :
The standard time for an operator is 11.46 minutes per
piece. In an 8 hour shift. If the operator produced 53
pieces in an given Working day, The operator’s
efficiency would be :
(Source : Russel, Taylor III in Operations management)
7
Jumlah Output
Kesalahan
Waktu
Good quality units
(input)(processing cost) + (defective units) (rework Cost)
Source : Kolarik in Creating Quality
8