In no particular order...
Flexibility. It is a hard 8-5? Or can I swing it either way an hour or two if need be?
Commute. It needs to be a reasonable drive in the morning. Work already takes enough of my day, I don't want to sacrifice the rest to the gods of traffic.
Pay. It needs to be reasonable. Obviously.
Benefits. This gets the honor of picking up any slack in the pay department.