How old do you have to be to work there can you be 15?

Call restaurant and ask, I started working at 14 when i was in school.

15 1/2 with work permit

I believe the age is 16 with a work permit but call the restaurant & ask

Technically, you would not be able to work in any positions that handle knives at the current age of 15. However, it doesn't hurt to check with them directly. Don't let anything stop you from trying to achieve what you want. If you don't try, you will never know....