The pay period runs two weeks and ends on Saturday, with the check coming the following Friday. If your store is getting checks next Friday, those checks will be for all work done through to midnight this Saturday. So yes, if you work this Friday, you will be paid for that day of work on next Friday's paycheck. I have no idea what the person you spoke to was talking about when he mentioned "holding checks," unless you asked about them mailing you your check or something.