A W-2 contractor is a worker who does the day-to-day job at a client company but is legally employed and paid by a staffing agency or employer of record. The agency runs payroll, withholds income tax, Social Security, and Medicare, and issues a Form W-2 at year-end, so the worker gets the tax treatment and legal protections of an employee even though the assignment is temporary or project-based. The client gets the labor; the agency carries the employer obligations.
The Three Parties in the Arrangement
Three parties sit inside every W-2 contractor relationship: you, the staffing agency, and the client company. You perform the work at the client’s site or remotely for its team. Your employment contract, paychecks, and W-2 come from the agency. The client never signs an employment agreement with you directly. It signs a business-to-business service agreement with the agency to secure a specific type of labor.
The split matters when something goes wrong. The agency handles payroll, tax withholding, employment records, and insurance. The client directs your schedule, deadlines, and tasks, and provides the systems you use. If a dispute arises over pay, benefits, or withholding, your recourse is with the agency, not the client.
Before an agency puts you forward for a role, expect to sign a right-to-represent agreement. That document gives the agency exclusive permission to submit you for a specific position. If two agencies submit the same candidate to a large client, the client may disqualify the candidate altogether. A well-drafted agreement names the job and role in question. Be cautious about signing anything that gives a recruiter blanket authority to shop your resume anywhere they want.
How Your Taxes Work as a W-2 Contractor
The staffing agency withholds federal income tax from each paycheck based on your Form W-4 and reports your wages and withholdings on a Form W-2 at year-end.1Internal Revenue Service. About Form W-2, Wage and Tax Statement
For Social Security and Medicare, the agency withholds 6.2% of your gross pay for Social Security and 1.45% for Medicare, and pays a matching 6.2% and 1.45% on its own side. The combined FICA burden is 15.3%, split evenly.2Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates The Social Security portion applies only to the first $184,500 in wages for 2026; once you cross that threshold, the 6.2% withholding stops for the rest of the year.3Social Security Administration. Contribution and Benefit Base Medicare has no cap. Once your wages exceed $200,000 in a calendar year, the agency also begins withholding an extra 0.9% Additional Medicare Tax.
This is the single biggest tax difference between a W-2 contractor and a 1099 independent contractor. A 1099 worker pays the full 15.3% self-employment tax out of pocket, covering both the employee and employer halves.4Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) As a W-2 contractor, you pay only your 7.65% share.
How the IRS decides whether a worker is an employee or an independent contractor comes down to three categories of evidence: behavioral control (does the company control how you do the work), financial control (does the company direct pay, expenses, and tools), and the type of relationship (written contracts, benefits, permanence, and whether the work is central to the business). No single factor is decisive.5Internal Revenue Service. Independent Contractor (Self-Employed) or Employee? A W-2 contractor generally falls on the employee side, because the agency controls pay and terms even though the client directs the daily work. Either party can file Form SS-8 to request an official determination if the classification is unclear.
What About Benefits
Benefits depend on the agency, not the client. Under the Affordable Care Act, any employer with 50 or more full-time employees (including full-time equivalents) must offer minimum essential health coverage to its full-time workers or face a shared responsibility payment.6Internal Revenue Service. Determining if an Employer Is an Applicable Large Employer Large staffing agencies typically meet that threshold. Smaller agencies may not, though some offer coverage voluntarily.
Retirement plan access follows a separate rule. A pension or 401(k) plan can require you to complete one year of service, defined as a 12-month period in which you work at least 1,000 hours, before you become eligible to participate.7Office of the Law Revision Counsel. 29 U.S. Code 1052 – Minimum Participation Standards Many contractor assignments end before you get there. And the law only limits how long an agency can make you wait if a plan exists; it does not require the agency to offer one.
If you were enrolled in the agency’s health plan and your assignment ends, COBRA may let you keep group coverage temporarily. COBRA applies to employers with 20 or more employees and covers qualifying events like job loss for reasons other than gross misconduct, or a reduction in hours.8U.S. Department of Labor. Continuation of Health Coverage (COBRA) You pay the full premium yourself, including the share the agency used to cover, so the monthly cost is usually much higher than what came out of your paycheck.
Some states require payroll deductions for state disability insurance or paid family leave, and a growing number of states and cities require paid sick leave, which reaches W-2 contractors through their agency. Accrual rates and caps vary by location.
The Workplace Rights You Get
Because you are legally an employee of the staffing agency, you get the core protections that come with employee status.
The agency must carry workers’ compensation insurance, which covers medical expenses and part of lost wages if you are injured performing your duties. Every state requires this coverage, though benefit levels and rules differ.
If your assignment ends through no fault of your own, you can generally file for unemployment insurance. Eligibility depends on your state’s rules for wages earned or time worked during a base period, typically the first four of the last five completed calendar quarters before you file.9U.S. Department of Labor. How Do I File for Unemployment Insurance? Because the agency paid unemployment taxes on your wages, those wages count toward eligibility even though you worked at a client site.
The agency also has to follow federal minimum wage and overtime rules. The federal minimum wage is $7.25 an hour, though many states set a higher floor. Under the Fair Labor Standards Act, you must be paid at least one and one-half times your regular rate for hours over 40 in a workweek.10eCFR. 29 CFR Part 778 – Overtime Compensation The agency, not the client, is legally responsible for paying you correctly.
Federal anti-discrimination laws apply fully. If you experience discrimination based on race, sex, age, disability, religion, national origin, or another protected characteristic, you can file a charge with the Equal Employment Opportunity Commission; a charge must be filed before you can bring a discrimination lawsuit.11U.S. Equal Employment Opportunity Commission. Filing a Charge of Discrimination
One quirk of the arrangement: if your agreement has a fixed start and end date, you are generally not an at-will employee during that period. The agency typically cannot end you without cause before the contract expires unless the agreement says otherwise. Once the term ends, though, the agency has no obligation to place you again.
If both the agency and the client exercise meaningful control over things like wages, scheduling, or hiring and firing, both may be treated as joint employers and share liability for wage-and-hour violations or unfair labor practices.12National Labor Relations Board. The Standard for Determining Joint-Employer Status – Final Rule The exact standard has shifted through rulemaking and litigation.
The Expense Tradeoff
Employee status brings one meaningful tax disadvantage. For the 2026 tax year, most W-2 employees cannot claim a miscellaneous itemized deduction for unreimbursed business expenses like travel, tools, or home office costs.13Internal Revenue Service. IRS Sets 2026 Business Standard Mileage Rate A narrow exception exists for certain military reservists, fee-basis state and local government officials, qualifying performing artists, and eligible educators. For everyone else, if the agency doesn’t reimburse a work-related cost, you absorb it.
A 1099 contractor, by contrast, can deduct business expenses directly against income on Schedule C, lowering both income tax and self-employment tax. If you’re buying your own tools, paying for certifications, or driving to client sites, factor those costs into what the W-2 rate actually pays you before you accept the role.
There is no federal requirement that an employer reimburse home office equipment or internet costs for remote work, but several states do require reimbursement of necessary work-related expenses, and those laws reach you through your agency. And under the FLSA, an agency cannot deduct the cost of tools or equipment from your pay if the deduction would drop your earnings below minimum wage or cut into required overtime pay, and it cannot ask you to pay them back in cash to work around that rule.14U.S. Department of Labor. Fact Sheet 16: Deductions From Wages for Uniforms and Other Facilities Under the Fair Labor Standards Act (FLSA)
What If You’re Actually Misclassified
Being labeled a 1099 contractor when the relationship really looks like employment is a common and expensive compliance failure. If a company classifies you as an independent contractor without a reasonable basis, it can be held liable for the employment taxes it should have withheld and paid.5Internal Revenue Service. Independent Contractor (Self-Employed) or Employee? Internal Revenue Code Section 3509 sets penalty rates for unpaid income tax withholding and FICA, with higher rates if the employer also failed to file 1099 forms.
The stakes for you are just as real. A misclassified worker pays the full 15.3% self-employment tax instead of the 7.65% employee share, loses access to unemployment insurance, and forfeits FLSA protections. If you think you’ve been misclassified, you can file Form SS-8 with the IRS to request a formal determination of your status.
Converting to a Direct Hire
Many W-2 contractor assignments are set up as temp-to-hire. The client evaluates you during the contract period and then decides whether to bring you on directly. If the client wants to hire you before the agency’s contract term expires, it typically owes the agency a conversion fee. Those fees commonly run from 15% to 30% of your projected first-year salary, with 20% cited most often in the staffing industry.
Some contracts include a buyout period, often 60 to 90 days, after which the client can hire you with no fee. If a permanent offer is the goal, ask your recruiter about the conversion terms in the agency’s service agreement so you know the timeline. Once you convert, you become a direct employee of the client, and your taxes, benefits, and protections all shift to that employer. Accrued balances with the agency, like retirement vesting or paid leave, may not follow you, so confirm what happens to them before you sign.