How much does contract staffing cost?
Contract staffing is quoted as a bill rate: the contractor's pay rate, plus employment burden, plus the agency's margin. Nothing about that is standard — burden depends on the country and employment type, and margin depends on scarcity and volume. Ask for the bill rate broken into those three parts.
What a bill rate is made of
The pay rate is what reaches the contractor. Employment burden covers everything the employer of record must pay on top: statutory contributions, insurance, paid leave where it applies, and payroll administration. The margin is the agency's own revenue, covering sourcing, vetting, replacement risk, and the working capital involved in paying the contractor before the client's invoice settles. A quote that hides these in a single number is impossible to compare.
Markup and margin are not the same number
This is the single most common misunderstanding in contract pricing, and it favours whoever is quoting. Markup is expressed against the pay rate; margin is expressed against the bill rate. The same commercial arrangement produces a larger-looking markup and a smaller-looking margin, so two agencies can quote what sounds like very different pricing for identical economics. Ask which basis is being used before comparing anything.
Why there is no standard rate
Employment burden is set by law and differs by country, and often by state or province, so an identical role costs different amounts to employ in different places. Scarcity moves the pay rate. Volume and contract length move the margin, because a longer assignment spreads the sourcing cost. Any single percentage presented as the industry norm is not something you should build a budget on.
Deriving the number from your own inputs
Start from the pay rate you would need to attract the skill in that market. Add the employer contributions that apply where the person will actually work, which your provider or an accountant can confirm. That gives your true cost of employment. The remainder of any quoted bill rate is the agency's margin, and now you can compare providers on a like-for-like basis.
The terms that change total cost
Conversion fees decide what you pay if you later hire the contractor permanently, and they vary widely; some agreements taper the fee to zero after a set assignment length. Overtime treatment, notice periods, and rate reviews on extension all move the total. So does who carries the cost of a replacement if an assignment ends early. These terms often matter more than a small difference in headline rate.
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Frequently asked questions
Is contract staffing more expensive than hiring permanently?
What is a conversion or buyout fee?
Who employs the contractor?
Can we negotiate the margin?
What happens if a contractor leaves mid-assignment?
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