Continuity mistake: During the scene when Zack sneaks into the cashier's lounge, his buddies are spying on him with a pirate telescope. However when Iqbal hands it to Russell to take a look, the shot is now zoomed in to Zack swiping the card in the slot. This would be impossible as the telescope is fixed to one focal point and was already fully extended for the first shot.
Continuity mistake: At Iqbal's son's birthday party when all the guys are around the table playing cards, Russel has his hands free when he talks to Zach about employee of the month. In the next shot, he is holding a beer in his right hand and asks Lon to pass the chips, in the next shot it is back on the table where he picks it up.
Factual error: In the Employee of the Month chart, the daily tracking is for the month of November. Both Zack and Vince at the end are tied at 15 stars which represent days. November only has 30 days, in other words the person who got to 14 which was Vince would of won, but the person who wins in the movie would have 16 and the other 15. That's is 31 days.