How do I find out for free if I have an arrest warrant? Can I be denied for a job if I have an arrest warrant?

I think you would know if there was an arrest warrant out for you if you had done something illegal. You won't be denied a job due to an arrest warrant. There are no real free sites available though. If you really want to know you'll have to pay.

Yes, you can be denied a job for having a warrant, most police departments will run a background search on you.