Is it okay to ignore calls from work?

I think you should call them and tell them you can't come in, and apologize, maybe saying you have plans with the family or something. Then at work tell them you don't check your phone much so it would be convenient if they let you know as soon as possible, while you're at work, but you would gladly help otherwise. That way they'll call less and you won't have to deal with accidentally missing calls, but they'll think you still care about your job...good luck!

Depends on the individual person...I know some people so dedicated to their work, that they'd answer a call in the middle of the night. Others, like myself, will answer only when convenient. Depends on how devoted you are to your job as opposed to your personal life, at the time. I'd recommend taking it on an individual basis, as to what you're doing and how you're feeling, at the moment.

They are doing you a favor by calling you. They're offering you the opportunity to work more hours and get more pay. You're also jeopardizing your chances to move up in the company by ignoring their calls. They are going to see you as someone who only wants to do the bare minimum so you'll get passed over come promotion time.

IF your asked, tell the truth. I didn't get the message tell it was too late. I do make plans on my days off anyways, so I doubt I'll be available ever on my day off