This may not be the best section to post this question, but maybe I'm wrong.
I don't have employees so I don't know the exact costs.
But things will vary from state to state. But from what I remember employee costs such as WC, UE, are about 1/4 to 1/3 the hourly rate. So a $10 hr can cost you $15 hr. Then payroll fees, witholding, FICA.
I'm sure someone with real world numbers from your state will post soon.