Right to work
"A Right to Work law secures the right of employees to decide for themselves whether or not to join or financially support a union. ... The National Right to Work Committee advocates that every individual must have the right, but must not be compelled, to join a labor union." 
- Indiana passed a right-to-work law in February 2012. Previously, Democrat legislators had pulled the stunt of leaving the state in order to block a Republican bill that would have prohibited requiring workers to pay union dues as a condition of employment.