What a wage determination is
A wage determination is the Department of Labor's ruling on the minimum wages and fringe benefits that apply to a specific type of construction work in a specific area. It is not one static document: a "wage determination" legally includes the original decision plus every later decision that modifies, corrects, or supersedes it.
- General (area) determinations cover a whole county or metro area and apply to most federal construction contracts.
- Project determinations are requested for a single job and are the exception, not the rule.
The WD number and why the modification matters
Every determination has a number in the shape [state][year][sequence], for example CA20260001: California, published in 2026, the first determination issued that year for its category. That number alone is not enough.
Each determination is republished as new modifications come out, and only one modification is active at a time. Your contract cites a specific determination and modification when it was awarded.
If you check rates against a superseded modification, you are checking against numbers the Department of Labor has already replaced. Before relying on a printout, confirm on sam.gov or with our own free lookup that the modification you have is still the active one.
Classifications: matching the work, not the job title
A wage determination lists dozens of classifications, each describing a specific type of work, not a company job title. An "Electrician" line on the determination might be split further, for example into general work versus specific exceptions for certain building types. Every worker on your certified payroll has to be classified by the work they actually performed that week, and paid at least that classification's rate, regardless of what your own payroll system calls their role.
Base rate plus fringe: the two components of the prevailing wage
Each classification lists two numbers: a basic hourly rate and a fringe benefit rate. Together they make up the prevailing wage for that classification, and the two are interchangeable in how you pay them: you can provide the fringe portion as real benefits (health insurance, retirement contributions) or pay it out as additional cash wages, as long as the combined total meets or exceeds what the determination requires.
A few real classifications from an actual California determination, to show the range:
| Classification | Base rate | Fringe | Required total |
|---|---|---|---|
| Laborer | $40.70 | $21.83 | $62.53 |
| Electrician | $43.78 | $15.39 | $59.17 |
| Carpenter, commercial building | $46.30 | $16.28 | $62.58 |
| Bricklayer, marble setter | $46.73 | $19.02 | $65.75 |
| Boilermaker | $51.98 | $42.11 | $94.09 |
Paying the base rate alone, even well above it, is not enough on its own: the fringe has to be accounted for too, whether as real benefits or added cash. A laborer paid $50.00 in straight cash with no benefits falls short of that $62.53 total even though $50.00 is well above the $40.70 base.
Apprentices are the one common exception
Registered apprentices are usually paid a percentage of the journeyworker rate for their classification, set by their registered apprenticeship program, not by the wage determination itself. That percentage still applies to both the base rate and (depending on the program) the fringe, so an apprentice's required rate is a calculation, not a flat lookup.
Where to actually look one up
SAM.gov publishes every active wage determination, searchable by state and construction type. It is public and does not require an account. If you would rather see classifications, base rates, and fringe laid out in a table without digging through SAM.gov's own interface, our free wage determination lookup does the same query and shows the modification and publish date alongside the results, so you can confirm you are looking at the current one. There's also a no-signup demo that takes it a step further and checks the rate against a full WH-347 as you fill it out.
Frequently asked
Where do I find the WD number for my contract?+
It is listed on the contract's wage decision page, usually attached to the solicitation or award documents. Your contracting officer or general contractor should have it if it is not in your own paperwork.
Does the wage determination change during my project?+
Generally no. The determination in effect on your contract's award date locks in for the life of that contract. The main exception is certain long-running or renewed contracts (like multi-year maintenance contracts), which get an updated determination annually.
Do I compare what I'm paying against the base rate or the total?+
The total, base plus fringe. The base rate alone is not the prevailing wage; it is only one of its two required components.
What if my county is not listed on any determination?+
That should not happen for a covered federal contract; every county has an assigned general determination for each construction type. If a search turns up nothing, double check the construction type and county spelling before assuming none applies.