According to one of the contestant's contracts, obtained by TMZ, each of the final 5 contestants is required to put in a day's work post-"Idol" at the new American Idol Experience at Disney World -- taping a performance for later use on the attraction.

Lucky for them, they're not working for free -- according to the deal, the 2nd through 5th place contestants will earn $50,000 for the day's work ... much more than most Disney employees can say.

But the deal gets a little trickier for whoever wins "Idol" this season -- that person is required not only to tape a performance for the attraction ... he or she is also required to participate in a commercial and make an in-person appearance at Disney world to help promote the attraction.

The good news -- the winner gets paid handsomely for the job ... $200,000.