What does preliminary work mean?

I got a check in the mail for $0.00 from my work, what in the world does this mean?

• I just quit my job, and I have one more check coming to me for the last week of work I did. I got a call from a manager telling me that I had to come in and sign some paperwork before I could get my last check. The new check should have come in on the evening of Thursday, Sept 25th, and I was supposed to come in on Friday or any day after to pick up my last check and sign the paperwork. However I got a check in the mail from work, with no message or explanation, for $0.00. The check said it was for the 13 hours of work I did from the period of 9/14 to 9/20, my last week at work. The stamp on the top right of the outside of the letter is marked 9/23. In the pay amount it says $0.00, and under that where it is usually written (e.g. two hundred dollars and 50/100 cents) is written "***VOID****". I am obviously going into work tomorrow to ask for an explanation, because clearly I did 13 hours of work and I should get paid for it. i was just wondering if anyone had an explanation as to what the heck this mysterious check for no money is all about. Thanks!!!

• Answer:

  It means they have a dumb computer and even 'stupider' programmer. Unfortunately for you, they will tell you: "It is a computer error." If you do not know the answer blame the computer, he can't answer back. Peace. P.S. Frame the check! Lucky for you, you left those nincompoops.