If you were hurt on a temp or agency assignment, two companies may be in the picture: the staffing agency that placed and pays you, and the host site where the work and the hazard were. Workers' compensation and a claim against another company are separate legal tracks, and which ones are open depends on your state's law and the facts.
If you are reading this from a hospital bed, from home with a cast or a brace, or on behalf of someone in your family who went to an assignment and did not come home the same, the questions tend to arrive all at once. Who was your employer, really: the agency whose name is on the paycheck, or the warehouse, factory or plant whose supervisor told you what to do that morning? Will the bills be covered, and what happens to the paychecks you were counting on? Most people facing an injury on a temp assignment have never had to think about how two companies divide responsibility for one worker, and nobody explained it at orientation.
This page explains that structure the way it is explained across a conference table: how the two companies fit together, what federal safety law says about each, who else may be answerable, which records tend to show who directed the work, and why the state where it happened matters so much.
