Ok, so I was offered the job at old navy, which surprises me, but GREAT!

now to the bad news. I am in training for the full time job i work during the day until september or october. so today they tell us that our permanent schedule has been made up due to need of the company. My schedule will be 9:30 to six monday, tues, thurs, fri, and SATURDAY. Which makes my life difficult because I told old navy i could work some week nights, and SATURDAYS and sundays. My co worker works for old navy every other weekend, and she told me not to tell them. She said that by the time september rolls around, they will like me enough to make an adjustment. I feel so stupid now because I don't want to look like a bad employee. I can still work sundays, and also, i can work later around the holidays. Plus i'll have wednesdays free during the school year which could be a plus. What would you guys do? Should I not tell them yet?

I work in retail management and Sunday shifts are the hardest to fill.  That's one plus for you.  When ANYBODY has an availability change, I always ask them how long they knew about it, why, and is it permanant.  So, from the manager's standpoint, I would tell the manager...because...it gives me time to find somebody else to fill Saturday.  Be forewarned that availability changes are "just cause" for termination.  It sucks, but they're trying to run a business.  You won't look like a bad employee, just an honest one if you tell mgmt.

Congratz on the new job!!

I think I agree with your friend. Wait to tell them, things can change. Good luck!!

Oh, and one more thing.  Make sure that Old Navy understands that the job at Old Navy is important to you.  Nothing ticks me off more than when a part-time employee makes their part-time job sound unimportant to them.

Ok, I swear, one more thing.  The retail industry is what I love and it is truly unique.  September thru December are CRUCIAL for retail...sales are extremely high and so is stress.  If you go in in September and tell them you need Saturdays off, that means they have to find someone ASAP to fill your Saturdays.  This is going to add to the holiday stress and it won't be pretty.  July and some of August is when business is slower and  they're doing their holiday hiring...you should tell them now.  They're not going to be happy about it either way, but it's not your fault.  Good luck!