Get a copy of your UPS personnel file.

[247spies]

Although in the past you did not sign anything but your check this is a case where that concept is bad. In CA ups does not have to show you anything you have not signed. You can request your file but I'll tell you it will not be quick and may not have all that should be there. Realize that in fear of being sued if you leave ups they will only tell possible employers of your dates you were employed nothing else. So there's little to gain,