Skills Matrix and Cross Training

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SEF Reference Guide G16  |  Manufacturing OpEx Maturity Assessment

What it is

A skills matrix is a grid with people down one side, jobs or skills across the top, and a proficiency code in each cell. It shows who can do what, to what standard, and where the team is one sick day away from a stopped line. Cross training is the planned work of moving people up that grid so more than one person can run every job.

The idea is old. The US Training Within Industry (TWI) program, run during World War II (1940 to 1945), taught supervisors to keep a simple training timetable: which worker can do which job, and who will be trained on what by when. TWI’s Job Instruction method is still one of the most reliable ways to teach a hands-on job.

The matrix is not the goal. The goal is a flexible, multi-skilled workforce that can follow demand, cover absences, and free people for improvement work without hurting output. The matrix is how you see where you stand and plan the next step.

Why it matters

• Delivery: When the only person who can set up the press is on vacation, orders wait. Cross training removes single points of failure.
• Cost: A flexible team can move to the constraint when demand shifts, which cuts overtime and temporary labor.
• Quality: Training to a written standard, and signing people off against it, reduces variation between operators and shifts. “Watch Bob for a week” teaches Bob’s shortcuts.
• Safety: People working a job they were never properly trained on are exposed to hazards they may not recognize. A current matrix keeps unqualified people off jobs they should not run alone.
• People: Clear skill levels give people a visible path to grow. Many plants tie pay steps or role progression to them.

Key terms

Term	Meaning
Skills Matrix	A grid of people against jobs or skills showing each person’s proficiency level. Used to plan cross training and spot single points of failure.
Cross training	Training people to perform more than one job so the team can flex to demand and cover absences.
Proficiency level	The standard a person has reached on a job, scored 0 to 4 (below). The numbers replace the older ILUO letters (and the quarter-filled circles some plants use) so the matrix can be added up into scores by task and by person.
0	Not trained.
1	In training. Can do the job only with a trainer beside them.
2	Can do the job with some support, but not yet to full standard for quality and rate.
3	Qualified. Can do the job alone, safely, to standard for quality and rate. Signed off.
4	Can train others on the job and improve it.
Single point of failure	A job with only one qualified person.
Coverage target	The number of qualified people each job needs. A common rule of thumb is at least three per job.
Task score	The sum of everyone’s level on one job (one column). Shows how much skill the team holds on that job. Also shown as a % of the maximum (4 x number of people).
Person score	The sum of one person’s levels across all jobs (one row). Shows how versatile that person is. Also shown as a % of the maximum (4 x number of jobs).
Team skill index	Total points in the matrix divided by the maximum possible (4 x people x jobs). One number for the whole area, trended over time.
Flexibility index	Qualified cells (level 3 or 4) divided by total cells (people x jobs). A simple trend measure of how multi-skilled the team is.
Job breakdown sheet	A one-page TWI-style breakdown of a job into important steps, key points, and the reasons for each key point. The training script.
Training timetable	The plan that turns gaps into dated training: trainee, job, trainer, target date.
Re-qualification	Checking and re-signing a person on a job after a long gap or a change to the standard.

How to do it

1. List the jobs. For each area, list jobs at the level you actually assign work (“Press 4 setup,” not “machining”). Include critical support skills: forklift, first article inspection, authorized lockout/tagout, team lead cover.
2. Define the levels. Use the five levels, 0 to 4. For each job, write what level 3 (qualified) means: trained with a job breakdown, observed by a qualified trainer, ran a set number of shifts at rate with no defects, signed off by the supervisor.
3. Build the current state. The supervisor fills in the matrix with the team, honestly. No one gets a 3 without evidence of sign-off. Expect this to hurt a little.
4. Set coverage targets. Start with the rule of three: every job has at least three people at level 3 or 4, and every person is at level 3 or higher on at least three jobs. Raise the target for the constraint, safety-critical jobs, and special processes (welding, testing). Lower it for rare, low-risk tasks. To set the target from the work itself, use the Skills Coverage tab of the SEF Resource Calculator (see G26), which compares qualified people with the people the load needs.
5. Score and find the gaps. Add up each column for the task score and each row for the person score. Then count the people at level 3 or 4 in each column (jobs below coverage target) and the jobs at level 3 or 4 in each row (people below target). Flag known retirements, leavers, and people on long leave. The worst columns are your risk list.
6. Build the training timetable. For each gap: trainee, job, trainer, start date, target date. Keep it realistic. One or two trainees per area at a time is usually what production can absorb.
7. Train with a structured method. Write the job breakdown first. Then use the four TWI Job Instruction steps: prepare the learner, present the job one important step at a time, have the learner try it while you correct, and follow up with tapering support.
8. Qualify and record. Trainer and supervisor sign off against the standard. Update the matrix the same week.
9. Post it and use it. Put the matrix on the area information board (VMS). Use it at shift start to assign people and in the weekly meeting to review the training plan.
10. Keep skills alive. Rotate people through the jobs they hold so skills do not fade. Re-qualify when someone has not done a job in six months (or your chosen interval) or when the standard changes.
11. Measure. Track task scores, person scores, the team skill index, the flexibility index, percent of jobs meeting coverage target, and training plan attainment (trainings completed on time divided by trainings planned).

Using the scores. Scores show how much skill is in the team and whether it is growing. Coverage shows risk. Use both: a task score can look healthy because several people sit at 1 or 2 while only one person is qualified. A job is covered only when enough people are at level 3 or 4. A rising person score is a fair, visible basis for development conversations and pay steps.

What each maturity level looks like

PE-2 Job Skills (Cross Training)

Level	Assessment wording	What it looks like on the floor	How to move up
1	Training is only given for each person’s primary job.	Each person knows one job. When someone is out, the line slows or the supervisor fills in. Know-how lives in people’s heads.	Name the two or three jobs that have only one qualified person and start cross training there now.
2	Cross training is done.	Some people cover for others, but it is informal. Nobody can say for certain who is qualified on what. Training happens when someone has time.	Build a matrix for one area with written level definitions and sign-off rules.
3	As Level 2, plus a skills matrix is understood and used.	Each area has a matrix with defined levels. Supervisors use it to assign work. It may live in a spreadsheet in the office.	Post it on the area board and attach a dated training timetable to close the gaps.
4	As Level 3, plus the skills matrix is posted on information boards (VMS) and used formally to plan training.	The matrix is on the board and current. Gaps are highlighted. A training plan with names and dates is reviewed in the weekly meeting.	Set coverage targets for every job, rotate people routinely, and trend the flexibility index.
5	As Level 4, plus the result is a truly flexible, multi-skilled workforce.	Every job meets its coverage target. People rotate as normal practice. Absences and demand swings are handled without overtime spikes. Operators train each other.	Sustain with re-qualification rules, link levels to progression, and extend the matrix to maintenance, quality, and office skills.

Evidence to look for

Document

• A skills matrix for each area, with a recent update date.
• Written level definitions and sign-off criteria.
• Training records with trainer and supervisor signatures.
• Job breakdown sheets or job instructions used for training.
• A training timetable with names and target dates.

Observation

• The matrix is posted on the area board and matches the people actually on shift.
• Pick two operators at random. Check that the jobs they are doing show level 3 or 4 for them on the matrix.
• People rotate between jobs during the week, not only in emergencies.

Statement

(questions to ask, and who to ask)

• Supervisor: “If [name] is out tomorrow, who runs this job?” The answer should come from the board, not memory.
• Operator: “What are you training on next, and when will you be signed off?”
• Training coordinator or HR: “How do you decide who gets trained on what?”
• Plant manager: “Which jobs have only one qualified person right now?”

Management report

• Task scores, person scores, team skill index, flexibility index, and coverage percentage, trended by month.
• Training plan attainment.
• Overtime and temporary labor used to cover absences.
• Quality escapes or incidents linked to an operator who was not qualified on the job.

Common pitfalls

• Audit wallpaper. The matrix was filled in once for a customer audit and has not changed since.
• Self-rating. Everyone rates themselves a 3. Without a sign-off standard, the matrix is a morale survey, not a skills record.
• Skills too broad. “Assembly” as one column hides the fact that only one person can do the final torque check.
• Shadowing as training. Watching an experienced person without a job breakdown passes on habits, not the standard.
• Everyone on everything. Training people on jobs they will never run wastes time, and the skill fades before it is used.
• No time for training. The plan slips every week because production always wins. Protect training hours in the schedule the same way you protect maintenance.

Template

Skills matrix (copy one per area)

Area: ________ Supervisor: ________ Last updated: ________

Name	Job A: ____	Job B: ____	Job C: ____	Job D: ____	Job E: ____	Person score	Person %	Jobs at 3+	Target
Person 1	3	4	2	0	1	10	50%	2	3
Person 2	4	3	3	3	0	13	65%	4	3
Person 3	1	0	3	2	3	9	45%	2	3
Task score	8	7	8	5	4	32
Task %	67%	58%	67%	42%	33%
Qualified at 3+	2	2	2	1	1
Coverage target	3	3	3	3	2
Gap	1	1	1	2	1

Legend: 0 = not trained, 1 = in training, 2 = can do with support, 3 = qualified to standard (signed off), 4 = can train others and improve the job.

• Person score = sum of the row. Person % = person score / (4 x number of jobs).
• Task score = sum of the column. Task % = task score / (4 x number of people).
• Team skill index = total points / (4 x people x jobs) = 32 / 60 = 53% in this example.
• Flexibility index = (count of cells at 3 or 4) / (people x jobs) = 8 / 15 = 53% in this example.

Training timetable

Trainee	Job	Current level	Target level	Trainer	Start date	Target date	Signed off (date, initials)

Sign-off checklist (per person, per job)

• [ ] Trained using the current job breakdown or SOP
• [ ] Performed the job under observation on at least ___ shifts
• [ ] Met rate and quality standard with no defects on the last ___ units
• [ ] Can explain the key points and why they matter
• [ ] Knows the safety requirements and PPE for this job
• [ ] Trainer signature: ________ Supervisor signature: ________ Date: ________

First 30 days

• Week 1: Pick one pilot area. List its jobs at assignment level. Agree on the 0 to 4 level definitions and the sign-off rule with the supervisor and a few operators.
• Week 2: Fill in the matrix together. Challenge every 3 or 4 that has no evidence. Add up the task and person scores, count qualified people per job, and mark the single points of failure.
• Week 3: Set coverage targets. Pick the three highest-risk gaps and put names and dates on the training timetable. Write job breakdowns for those jobs.
• Week 4: Post the matrix and timetable on the area board. Review them in the daily meeting. Record the first sign-offs and decide which area goes next.

Further reading

• Donald A. Dinero, Training Within Industry: The Foundation of Lean (Productivity Press, 2005). History and methods of TWI, including Job Instruction.
• Patrick Graupp and Robert J. Wrona, The TWI Workbook: Essential Skills for Supervisors (Productivity Press, 2006). Practical guide to Job Instruction and job breakdowns.
• David Meier and Jeffrey K. Liker, Toyota Talent: Developing Your People the Toyota Way (McGraw-Hill, 2007). How Toyota breaks down jobs and trains to standard.
• TWI Institute, overview of the TWI programs: https://www.twi-institute.com/twi-training/