Workforce formula
One operator's earned minutes (pieces × operation SMV) as a percentage of the minutes they worked on that operation.
Operator efficiency % = pieces × operation SMV / minutes worked × 100
| Symbol | Meaning | Unit |
|---|---|---|
| n | Good pieces completed | pcs |
| SMV_op | SMV of the operation | min |
| T_worked | Minutes worked on the operation | min |
Use it for skill tracking, incentive schemes and to find operators who need training or method support.
An operator sews 100 pockets with an SMV of 0.50 min in 60 minutes of on-standard time.
Efficiency = 100 × 0.50 / 60 × 100 = 83.3%
A skill matrix records which operators can do which operations and how well. How to build one for a sewing line, how to grade skills with real efficiency data, and how to use it for balancing, absenteeism and training.
Line efficiency compares the minutes a sewing line earned with the minutes it had. Learn the formula, work through examples, understand what drives efficiency up and down, and avoid the reporting mistakes that make the number meaningless.