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What happens if I intentionally throw out a paycheck?
How/when does my employer find out? Do they get a report from their   bank stating that "check 1234 for $1212.12 paid to John Doe was never   deposited" or does it manifest itself as an eventual accounting   discrepancy that somebody has to work to hunt down? The accounting department or the payroll company they use will report that the check was not deposited. The bank has no idea that a check was written, but the accounting deportment will know.  The bank reports on all the checks that were cashed. Accounting cares because the un-cashed check for $1212.12 is a liability. They have to keep enough money in the bank to pay all the liabilities. It shouldn't be hard for them to track down the discrepancy, they will know what checks are outstanding. Can my employer punish me for refusing the money in this way? Do they   have any means to force me to take what I am "owed?" They can't punish you. But at some time in the future they will will tell their bank not to honor the check. They will assume that it was lost or misplaced, and they will issue a new one to you.  When tax time comes, and I still have not accepted the money, would it   be appropriate to adjust my reported income down by the refused   amount? You can't decide not to report it. The company knows that in year X they gave you a check for the money. They are required to report it, since they also withheld money for Federal taxes, state taxes, payroll taxes, 401K, insurance. They also count your pay as a business expense.  If you try and adjust the numbers on the W-2  the IRS will note the discrepancy and want more information. Remember the IRS get a copy of every W-2.  The employer has to report it because some people who aren't organized may not have cashed a December check before the company has to generate the W-2 in late January. It would confuse everything if they could skip reporting income just because a check wasn't cashed by the time they had to generate the W-2.