What are the normal contract agreements regarding holiday pay?

I work 11 hours on Monday, 8 on Tu, W, Th, and 5 hours on Friday. It all adds up to 40 hours.

Well, last week we got Thursday and Friday off, paid. Everyone else works 8 hrs on Friday, and got paid for 8. However, I only get paid for the 5 hours I’m scheduled to work on Friday. So everyone else got 16 hours paid and I got 13. Something just doesn’t seem quite fair here. It seems like I should get another 3 hours somewhere.

I haven’t gone so far as to look at the contract because I’m not going to do anything about it anyway, but is there some sort of standard rule regarding something like this?

It’s nothing to throw a fit about, but it’s bugging me!

What do you guys think?