That depends on what the document is (or says). It would be okay for the company to have you sign a document stating that you acknowledge receipt of the funds. If it also states that it's a "final payment" or that you've "been paid all monies owed" (and you disagree), or it has a "non competition agreement," or it states that you "release all claims" against the company, or similar language, or typifies the termination in a way you disagree with, then you may refuse to document, and you should still be able to receive your final paycheck (assuming you are an hourly worker and do not have an employment contract).
Answered on Oct 23rd, 2012 at 9:18 PM