Measure Workforce Productivity Against Standards
Enter your standard time per unit, units produced, and actual hours to calculate LER. See whether your team is earning more or fewer standard hours than they spend on the clock.
Production Standards
Labor Input
LER = (7.08 std hrs / 8.0 actual hrs) x 100 = 88.5%
Labor Efficiency Ratio
88.5%
Near Standard
Std Hours Earned
7.08
hours
Actual Hours
8.0
hours
Units / Labor Hr
10.6
units/hr
Cost Impact
Operators used 55 more minutes than the standard allows. Each point below 100% increases your labor cost per unit.
110%+
Exceeding
100%
At Standard
85-99%
Near
<85%
Below
How LER Works
Labor Efficiency Ratio compares the time your production should have taken (based on engineering standards) against the time it actually took. The formula is straightforward: divide standard hours earned by actual hours worked, then multiply by 100.
LER = (Standard Hours Earned / Actual Hours Worked) x 100
Standard Hours Earned
- •The allowed time for the work completed, based on time studies or engineered standards
- •Calculated as standard time per unit multiplied by units produced
- •Represents the output value in labor terms
Reading the Result
- •Above 100%: Operators completed work faster than the standard allows
- •At 100%: Production matched the engineered standard exactly
- •Below 100%: More actual time was consumed than the standard predicts
Setting Accurate Standards
LER is only as reliable as the standard it measures against. Inflated standards make everyone look efficient; tight standards make productivity appear worse than it is.
Methods for Setting Standards
- 1.Time studies: Direct observation of experienced operators performing the task under normal conditions
- 2.Predetermined time systems: MTM or MOST to build up standards from elemental motions
- 3.Historical data: Averaging actual times from past production runs (less precise but quick)
Common Pitfalls
- •Not including allowances for fatigue, personal time, and minor delays
- •Using a single operator's pace instead of a representative sample
- •Never updating standards after process improvements or equipment changes
LER Benchmarks by Environment
Target LER depends on your process type, workforce experience, and how standards are set.
| Environment | Typical LER | Top Performers | Notes |
|---|---|---|---|
| Assembly Lines | 90-100% | 105-115% | Paced lines constrain variance |
| CNC Machining | 85-95% | 100-110% | Setup time drives variance |
| Welding / Fabrication | 80-90% | 95-105% | Fit-up variability impacts time |
| Warehousing / Picking | 85-95% | 100-120% | Layout and slotting affect pace |
| Packaging | 90-100% | 105-115% | Repetitive tasks standardize well |