+1 for Justworks. There are other competitors like Gusto (I think?) that do it too. They have the tax and regulatory stuff figured out for every state and city

+1 for Justworks. There are other competitors like Gusto (I think?) that do it too. They have the tax and regulatory stuff figured out for every state and city and are basically the actual "employer" for your employees. I think it's called a PEO