A layered process audit is a short, frequent check that the critical parts of a process are being done the way they were designed — standard work followed, error-proofing working, gauges in calibration, bad parts tagged and kept away from good ones. What makes it "layered" is that people from several levels of the organization ask the same questions at the same stations: team leaders every shift, supervisors daily or weekly, managers and plant leadership less often. This checklist audits one station in about ten minutes, opens a countermeasure box for every No, and starts with whether the last audit's findings were actually fixed. Fill it in here and download a scored PDF without creating an account.
Why the layers matter
A team leader who checks a station every shift catches drift early. A plant manager who checks the same station once a month sees whether the system holds when it is not their own team on the line, and shows the floor that the questions matter to people who control budgets and priorities. The value comes from the overlap: the same questions, asked by different people, at different times.
Record the layer and the frequency at the top of each audit. Over a few months that lets you see whether higher layers are actually turning up, and whether stations score differently depending on who is asking.
Watch first, then ask
Most of these questions are answered by watching one or two complete cycles before saying anything. Does the operator follow the sequence on the instruction sheet? Was the error-proofing device challenged with a known-bad part at the start of the shift? Is the gauge on the bench the one the control plan calls for, and is its calibration sticker in date?
Then ask the operator, not the supervisor. "What would you do if this part failed the check?" tells you more about the reaction plan than any binder on the wall.
Fix it before you leave the station
An LPA finding is supposed to be dealt with on the spot. Every No on this form opens a box for the immediate countermeasure: the part re-tagged, the instruction replaced with the current revision, the gauge pulled and a calibrated one brought in, the suspect parts since the last good check contained. Anything that cannot be fixed on the spot goes into the nonconformance register at the end with an owner and a date.
On the phone, speak while you walk, and the document writes itself. Saying what you saw and what you did about it as you stand at the station is quicker than writing it up at a desk an hour later.
Keep the questions alive
An LPA that asks the same twenty questions for two years becomes a box-ticking exercise. Use this form as the core and add station-specific notes for the characteristics that matter most there. When a customer complaint or an internal escape points to a process step, add a question about it for a few months. When a question has passed at every station for a long time, consider swapping it for one that has not.
Common questions
What is a layered process audit?
A series of short audits of the same process controls, carried out by people from different levels of the organization at different frequencies. It checks that the process is being run as designed, rather than inspecting the product, and is widely used in automotive and other high-volume manufacturing.
How often should each layer audit?
A common pattern is team leaders every shift, supervisors daily or weekly, area managers weekly or monthly, and plant leadership monthly. The right frequencies depend on how many stations you have and how stable the process is; what matters is that the schedule is published and kept.
How is a layered process audit different from a 5S audit?
A 5S audit asks whether the work area is organized and kept that way. An LPA asks whether the process is being followed: standard work, error-proofing, gauges, defect control. This checklist includes one short section on the workplace, but its focus is the process.
How is the score calculated?
It is the share of questions answered Yes out of those that applied at this station. N/A answers are left out. Each No also appears in the report's list of findings with the countermeasure you recorded.
What should happen when the auditor finds a nonconformance?
Correct or contain it before leaving the station, and record what was done. If product made since the last good check could be affected, contain it. Anything that needs more than an immediate fix goes into the register with an owner and a due date, and the next audit at that station starts by checking it was closed.