Right to Work simply means you don't have to be a member of a union if you don't want to be. The Mackinac Center has an excellent FAQ about RTW you can read here.
SB 945, a local right-to-work bill that allows local municipalities to create right-to-work zones. Don't expect it to go anywhere in the legislature, not enough courage, too many lawmakers beholding to the unions.
Read an excellent essay from the Mackinac Center here.
Do you think Michigan should be a right-to-work state? Vote here.