Return to Work for Staffing Agency Clients: Who Offers Modified Duty When the Worker Is on Assignment

10/19/2026

Writing workers compensation insurance for staffing companies means insuring employees who spend their working day at someone else's business. That changes return to work. When a temporary worker is hurt on assignment, the staffing firm is usually the employer on the policy, but the client company controlled the job, the site and the supervisor. When the treating provider releases the worker with restrictions, the obvious question is: who offers the modified-duty job?

This article walks through why return to work is harder in staffing arrangements, who carries the coverage, the two places modified duty can happen, contract language worth reviewing, and the account review questions that help a staffing client (or a client that uses staffing firms) avoid long, expensive claims.

Why Return to Work Is Harder in Staffing Arrangements

Three features of staffing make return to work harder than in a direct-hire business.

Split control. The staffing firm hires, pays and insures the worker. The client company directs the work day to day. OSHA describes staffing agencies and host employers as jointly responsible for maintaining a safe work environment for temporary workers. Return to work needs both of them, but neither controls the whole picture.

Short, task-specific assignments. A temp may be placed for one job at one site. If that job cannot accommodate restrictions, the client may simply end the assignment and ask for a replacement. The injured worker is then at the staffing firm with no assignment and a wage-loss claim.

Weak attachment. A worker who has been at a client for three weeks has little connection to either employer. Without fast, clear contact, the worker is more likely to disengage, and the claim gets longer.

The result is that staffing claims often stay open longer than they need to, simply because nobody owns the modified-duty offer.

Who Carries the Workers' Comp: Staffing Firm, Client, or PEO

Start every staffing account by getting the coverage structure clear. There are three common arrangements, and they are not the same.

Temporary staffing. The staffing firm employs the worker and places them at a client for a period or project. The staffing firm's workers' comp policy normally covers its employees on assignment. The client usually carries its own policy for its own employees.

Professional employer organization (PEO). A PEO co-employs a client's existing workforce on an ongoing basis and often provides workers' comp under a master policy or arranges client-level policies. How PEO coverage must be structured, and how claims and experience are tracked, depends on state law and the carrier. Check the state's rules and the policy before assuming who is the employer of record for comp.

Direct-hire client using temps. Your client is the host employer. Its own policy covers its own employees, and the temps are covered by the staffing firm's policy. Your client still needs to know its exposure if a temp sues it rather than claiming against the staffing firm's policy.

The special-employer question

When a temp is hurt at a client site, can the worker sue the client company in tort, or is the client also protected by the workers' comp exclusive remedy? States answer this through statutes and case law on "special," "borrowed," or "dual" employers, and the answers vary.

One verified example: Texas Labor Code Section 93.004 provides that a certificate showing a temporary employment service carries workers' comp insurance is proof of coverage for the service and its client, and that if the service elects to obtain coverage, both the client and the service are subject to the Texas employee-election and exclusive-remedy provisions. Other states reach their own results through different statutes and court decisions. For any other state, look up the statute or ask the carrier's underwriting or legal staff rather than assuming the Texas rule applies.

Endorsements that come up

• Alternate Employer Endorsement (NCCI form WC 00 03 01 A). Used when the named insured has agreed to cover a special or temporary employer for claims by the insured's employees. For a staffing firm, alternate employers can be listed as "all" or "any," or limited to specific jobs or contracts. The endorsement states that it is not intended to satisfy the alternate employer's own duty to secure workers' comp for its own employees, so the client still needs its own policy.
• Waiver of Our Right to Recover From Others (NCCI form WC 00 03 13). The carrier keeps its right to recover from third parties responsible for an injury but agrees not to enforce it against the party named in the schedule, to the extent required by a written contract. Charges and rules for the waiver are set by state filings.

Forms and their state versions differ in states with independent rating bureaus, so check the forms filed in the state. For the broader coverage design questions, see our article on workers' comp policy design.

Modified Duty at the Client Site vs. at the Staffing Firm

Once restrictions come in, there are two realistic places for modified duty.

Option 1: At the client site

The best outcome, when it works. The worker stays in a familiar place, near the original supervisor, doing lighter tasks.

What it needs:

• The client agreed in advance (ideally in the staffing contract) to consider modified duty for injured temps.
• Someone at the client who reviews restrictions and identifies tasks: a supervisor or site safety contact.
• Clear billing: does the client pay the normal bill rate for modified work, a reduced rate, or nothing?
• Agreement on who documents the offer, schedule and restrictions.

Option 2: At the staffing firm or another placement

When the client will not take the worker back, the staffing firm can offer modified duty itself: office work at the branch, a different placement within restrictions, or a nonprofit placement program if the firm or its carrier uses one.

What it needs:

• A list of standing modified-duty tasks at the branch, written before anyone is hurt.
• A written offer that states the restrictions, schedule, location, pay and start date.
• Coordination with the adjuster, because a modified-duty offer and the worker's response can affect wage-loss benefits under state law.

Question	Client site	Staffing firm or other placement
Who identifies tasks	Client supervisor	Staffing firm branch or return-to-work coordinator
Who issues the offer	Usually the staffing firm, as employer	Staffing firm
Who pays wages	Staffing firm (billing arrangement with client varies)	Staffing firm
Biggest risk	Client ends the assignment instead	No meaningful work available

 

In either case, the staffing firm is the employer making the offer. The treating provider sets the restrictions, and the adjuster handles how the offer affects benefits.

Leave and disability laws apply here too. Whether the worker is eligible for FMLA leave depends on the worker's employer and hours, and ADA obligations can apply to the staffing firm, the client or both depending on control. Those questions belong with the client's employment counsel, but you should flag them.

Contract Language Worth Reviewing: Indemnity, Waivers, and RTW Cooperation

Many staffing return-to-work problems trace back to the contract between the staffing firm and its client. You are not the lawyer, but you can ask whether these terms exist and send the contract to counsel and the carrier for review.

Indemnity and hold-harmless. Who indemnifies whom for injuries to temps? Does the client's indemnity of the staffing firm (or the reverse) line up with what the policies actually cover?

Waiver of subrogation. Does the contract require the staffing firm's carrier to waive subrogation against the client? If so, the policy needs the matching endorsement, and the staffing firm should know there may be a charge.

Alternate employer. Does the contract require the client to be covered as an alternate employer? Is the endorsement on the policy, for the right states?

Safety duties. Who trains the temps on site hazards? Who provides protective equipment? OSHA treats safety as a shared duty, and the contract should say who does what.

Injury reporting. How fast must the client tell the staffing firm about an injury, and to whom? OSHA's recordkeeping rule says the employer that supervises temporary workers on a day-to-day basis records their injuries and illnesses (29 CFR 1904.31(b)(2)), which is often the client. The staffing firm still needs to report the claim to its carrier.

Return-to-work cooperation. Will the client consider modified duty for injured temps? Will it notify the staffing firm before ending an injured worker's assignment? What does it pay for modified work?

Restricted tasks. Is the temp barred from certain jobs, such as operating forklifts without training? Many injuries happen when a temp is moved to work the staffing firm never agreed to.

Claims Communication Among Three Parties

A staffing claim has at least three employer-side voices (staffing branch, client site, carrier) plus the worker and the treating provider. Set up the communication path before the first claim.

• One coordinator at the staffing firm owns every claim: receives the injury report, reports to the carrier, tracks restrictions and makes or coordinates the modified-duty offer.
• One contact at each major client site who reports injuries to the coordinator and reviews restrictions for possible tasks.
• The adjuster receives the offer and the worker's response. Ask the carrier how it wants offers sent; see our article on the workers' comp claims process.
• The worker hears from the coordinator early, ideally within a day, and regularly while off work.

Write down the path in a one-page claim protocol that both the staffing firm and its larger clients sign off on.

Account Review Questions for Staffing Clients

Use these at new business, at renewal, or when a staffing account's loss runs show long lost-time claims.

Coverage

• What states do you place workers in, and is each one listed on the policy?
• Do any client contracts require alternate employer or waiver of subrogation endorsements? Are they on the policy?
• Do you use PEO arrangements or co-employment for any clients? How is comp handled there?

Contracts

• Do your client contracts address injury reporting, safety training, restricted tasks and modified duty?
• Who reviews contracts before signing, and does that review include insurance requirements?

Return to work

• Do you have a written return-to-work policy? Who coordinates it?
• Do you have standing modified-duty work at your branches?
• How often do clients take injured temps back on modified duty? Which clients refuse?

Claims

• How fast do client sites report injuries to you, and how fast do you report to the carrier?
• Who talks to the worker in the first week?

Turn the answers into a short action list, and keep a copy in the account file. For the program design underneath all of this, see our overview of return-to-work programs.

Training for the Staffing Firm's Coordinator

The coordinator role in a staffing firm is demanding: restrictions, offers, FMLA and ADA interaction, documentation and three-party communication. The Return-to-Work Training & Certification program is an online, self-paced course that covers modified duty and restrictions, fitness-for-duty documentation, ADA accommodation, interaction with workers' comp and consistent procedures, with an optional exam for the Certified Return-to-Work Administrator designation. Team enrollment with a manager progress view is available for three or more learners, which suits firms with several branches.

Frequently Asked Questions

Who provides workers' comp for a temporary worker placed at a client?

In a typical temporary staffing arrangement, the staffing firm employs the worker and its workers' comp policy covers its employees on assignment. The client company carries its own policy for its own employees. PEO arrangements can differ, and state law decides some questions, such as whether the client is also protected by the exclusive remedy. Confirm the structure for each account rather than assuming it.

Can a staffing client be sued by an injured temp worker?

It depends on state law. Some states treat the client as a special or borrowed employer protected by the workers' comp exclusive remedy in some circumstances; others allow tort claims in certain situations. Texas, for example, addresses this in Labor Code Section 93.004 for temporary employment services that carry coverage. For other states, check the statute and case law with counsel or the carrier.

What is an alternate employer endorsement?

It is an endorsement (NCCI form WC 00 03 01 A in NCCI states) used when a named insured, such as a staffing firm, has agreed to cover a special or temporary employer for claims by the insured's employees. Alternate employers can be listed specifically or as "all" or "any." It does not replace the client's duty to carry its own workers' comp for its own employees.

Who offers modified duty when a temp is injured on assignment?

The staffing firm, as the employer, usually makes the offer. The modified work may be at the client site, if the client agrees to it, or at the staffing firm's branch or another placement. The treating provider sets restrictions, and the adjuster handles how the offer affects wage-loss benefits. The staffing contract should say whether the client will consider modified duty.

Who records a temp worker's injury on the OSHA 300 log?

Under 29 CFR 1904.31(b)(2), the employer that supervises the temporary worker on a day-to-day basis records the injury or illness. That is often the host client, not the staffing firm. Recording on the OSHA log is separate from reporting the claim to the workers' comp carrier, which the staffing firm still must do.

What contract terms matter most for staffing return to work?

Injury reporting timelines, safety training and protective equipment responsibilities, restricted tasks, waiver of subrogation and alternate employer requirements, indemnity, and whether the client will consider modified duty for injured temps. Review them with counsel and the carrier, and make sure the policy endorsements match what the contract requires.

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