What KPIs should a production supervisor have?
A production supervisor should be measured on five things: how closely the shift followed the plan, how well the main machine was used (OEE), how much was rejected, safety and 5S in the area, and the people in the team. Each KPI needs a written formula, a source report and a monthly review.
Most factories judge a supervisor by feel. If the owner walks past and the machines are running, the supervisor is "good". If a customer calls about a late order, he is "bad". That is not fair to the supervisor, and it does not improve the shift.
A KPI (key performance indicator) replaces the feeling with a number that everyone can see.
Start from the role, not from the numbers
KPIs come last, not first. The order is:
- Job description (JD): what the position is for, its responsibilities and its authority.
- KRAs (key result areas): the four to six results the role is accountable for, with a weight for each.
- KPIs: the measure, the formula and the report for each KRA.
- Monthly review: the supervisor and his manager look at the numbers together.
- Yearly performance review: the monthly reviews add up to the appraisal and the increment.
A useful purpose line for a shift supervisor's JD is: plans and supervises the shift to the plan, to the drawing, and with the least loss. Every KPI below comes from that one line.
The five KRAs, with example weights
| KRA | Example weight | Why it matters |
|---|---|---|
| Plan adherence | 25% | The customer's date depends on the shift doing what was planned |
| Main machine OEE | 20% | The bottleneck machine decides the output of the whole plant |
| Rejection | 20% | Every rejected part costs material, machine time and a delay |
| Safety and 5S | 15% | An unsafe or untidy area loses time every day |
| People | 20% | A supervisor's real job is to make his team better |
These weights are an example. Each company sets its own, and they can change from year to year as priorities change.
The KPIs, with formulas
| KPI | Formula | Source report |
|---|---|---|
| Plan adherence % | Quantity made as per plan ÷ quantity planned × 100 | Daily plan vs actual |
| OEE % of the main machine | Availability × performance × quality | Downtime record and production report |
| Rejection % | Rejected quantity ÷ quantity produced × 100 | Rejection and rework register |
| Safety and 5S | Near-misses reported, accidents (target zero), 5S audit score | Accident and near-miss register, 5S audit |
| People | Attendance %, skill matrix cells filled, training hours given | Attendance register, skill matrix |
A KPI that nobody reviews is just a number on a sheet. The monthly review is what makes it a KPI.
Five mistakes to avoid
- Too many KPIs. Ten measures means none of them gets attention. Keep five or six.
- No formula. "Good quality" is not a KPI. "Rejection % = rejected ÷ produced × 100" is.
- New paperwork just for the KPI. Use the daily reports the plant already fills. If the report does not exist, fix the report first.
- Measuring what the supervisor cannot control. If material arrives late from purchase, the shift's plan adherence will drop. Record the delay reason, so the review is fair.
- Numbers without a review. Fix a date every month when the supervisor and his manager sit together for 30 minutes with the numbers.
How to start in your plant
- Write the supervisor's JD on one page, with the purpose line.
- Agree the five KRAs and their weights with the supervisor, not for him.
- For each KPI, write the formula and name the report it comes from.
- Check that the daily reports are filled correctly for one month before you set targets.
- Then set the targets, and review every month.
The first month is always messy, because the daily entries are not yet right. Fix the input before you trust the output.
Key points
- Measure a production supervisor on plan adherence, OEE, rejection, safety and 5S, and people.
- Build the KPIs from the job description, through the KRAs.
- Every KPI needs a formula, a source report and a monthly review.
- Keep it to five or six KPIs, using reports the plant already fills.
- Fix the daily data entry before setting targets.
