What is a skill matrix, and what does it show?
A skill matrix is one page that lists every operator against every machine or activity, with a level from 0 to 4 in each box. It shows who can run which machine alone, who is still learning, and where you have too few trained people. It is the training plan of the shop floor.
In many plants, the supervisor knows by memory who can run which machine. That works until he is on leave. Then someone asks, "Who can run the grinder today?" and nobody can say for sure.
Skill sits in people's heads. A matrix puts it on paper, where the owner, the supervisor and the worker can all see it.
The five levels
We use one scale across the plant.
| Level | Meaning |
|---|---|
| 0 | Not trained |
| 1 | Learning. Needs a person beside him |
| 2 | Works with supervision |
| 3 | Works alone, to standard |
| 4 | Expert. Can train others |
A person at level 3 is the backup for that machine. A person at level 4 is the trainer.
The most important rule: give a level only for what you have seen. Not for what you expect, and not for the years of service. A man with ten years' service may be level 2 on a machine he rarely uses. A younger man may be level 3.
How the matrix is built
- List the activities or machines across the top. Nine columns are usually enough for one section.
- List the operators down the side, with name and code.
- Write the level in each box, from what the supervisor has seen.
- Write the level needed to work alone for each machine. For critical machines it is usually 3.
- Count the gap. For each machine: how many operators do you need at the required level, and how many do you have?
- Look at the red boxes. A gap means fewer people can run that machine alone than the plant needs.
Take a simple example. A section has five operators and four machines. On the cylindrical grinder only one man is at level 3. If he is absent, the grinder stops. The gap is one. That is where your next training goes.
Why label and skill are not the same
We often see a worker called a "helper" who can do a fitter's job well. On paper he is still a helper. The plant does not use him fully, and he does not feel recognised.
The opposite also happens. A worker refuses a job outside his declared skill, and the supervisor negotiates every time.
The matrix helps in both cases. It shows the real skill, not the label. Then you can rotate people across jobs by a plan, and everyone knows why.
From gap to training, step by step
The matrix is not a wall chart. It is a path.
- Find the gaps. Machines with fewer than the needed number of people at level 3.
- Choose who to train. Pick someone at level 1 or 2 on that machine, who is interested.
- Name the trainer. The person at level 4 on that activity teaches. The trainer learns by teaching, the trainee by doing.
- Set a date and a target level. For example, from level 1 to level 2 in three months.
- Assess and certify. When the operator is ready, he is tested on the machine. We use a short operator certification page: knowledge and safety checks, machine skill checks, and a practical test where he makes jobs alone.
- Change the level only after the test. Not before.
- Review every six months.
A new joiner learns the same way. Safety and 5S first, then one machine with a buddy, and the level checked every month. After he is safe on one machine, he starts on a second.
A skill matrix does not tell you how good your people are. It tells you where one absence can stop a machine.
What the matrix is used for
- Daily cover. The supervisor knows who can take over a machine today.
- Training plan. Gaps become training needs. Training starts from the gap, not from the trainer.
- Hiring. You know how many skilled people the order book needs, and how many are missing. Skills come slowly, so plan early.
- Worker review. The skill level feeds into the yearly worker performance sheet.
- Career path. A worker can see: this is where I am, this is the next level, this is what I must learn.
Mistakes to avoid
- Giving levels by feeling. Use what you have seen.
- A matrix nobody updates. If the date of the last review is old, it is a poster, not a tool.
- Training only the best operator. Spread cross-training so that every key machine has at least two people at level 3.
- Hiding the matrix from workers. Show each worker his own row. People work better when they know the next step.
How to start in your plant
- Pick one section, such as the machine shop.
- List the machines or activities.
- Sit with the supervisor and give a level to each operator for each machine.
- Count the gaps against the number of people you need.
- Choose one gap and plan a training of three months, with a trainer and a date.
Key points
- A skill matrix shows who can run which machine, on a scale of 0 to 4.
- Give a level only for what you have seen.
- Machines with fewer trained people than needed are the gaps to fix first.
- The person at level 4 is the trainer; the person at level 3 is the backup.
- Review every six months, and change a level only after a test.
