What Does NOC Mean in Workers Compensation?

NOC stands for “Not Otherwise Classified.” When it appears at the end of a workers compensation classification code, it means the job or business was assigned a general, catch-all code rather than a specific one — because no more precise classification existed for the work being done.

You will usually see it written as part of the class description rather than the number itself, for example “Clerical Office Employees NOC.”

Why it matters

Workers compensation premium is built from your classification codes. Each code carries its own rate, and that rate reflects the loss history of every employer classified the same way.

So the code is not an administrative detail — it is one of the inputs that decides what you pay. Sitting in a broad NOC classification when a narrower, lower-rated code genuinely describes your operation means you may be rated alongside businesses whose work is nothing like yours.

The reverse is true too. An NOC code is sometimes exactly right, and trying to force a more specific classification that does not fit your operation is not a saving — it is a misclassification, and it tends to surface at audit.

What affects the answer

Who assigns the code. Classification systems are maintained by rating bureaus. Missouri follows NCCI classifications, so the same code means the same thing from one NCCI state to the next.

What your employees actually do, not what the business is called. Two companies in the same industry can carry different codes if the day-to-day work differs — and one business can legitimately carry several codes across different job functions.

The governing classification. Most employers have one code describing the main operation, plus standard exceptions such as clerical staff or outside sales, which are classified separately.

Your audit. Workers compensation premium is estimated at the start of the term and trued up at audit against actual payroll and actual duties. If the classifications on the policy no longer describe the work, the audit is where that gets discovered.

In Missouri

Missouri generally requires workers compensation coverage for employers with five or more employees, and for construction-industry employers with one or more. Thresholds and exemptions have details worth confirming for your own situation rather than assuming.

An example

A small firm is written under a broad NOC classification when the policy is first issued, because the application described the business in general terms. A year later, at audit, it turns out most of the payroll sits in a job function with its own specific class code and a different rate.

The fix is not complicated, but it is much easier to have that conversation when the policy is written than to unwind it after an audit has already been run.

Questions worth asking

• Which classification codes are on my policy right now, and what does each one describe?
• Is the NOC code the correct one, or does a specific code describe what we actually do?
• Are clerical and outside-sales staff classified separately?
• What payroll is being reported under each code?
• What will the auditor look at, and what should I have ready?