Indiana is now the 23rd Right-To-Work state in the country.
The Senate signed off on the bill Wednesday just two days after it was approved in the House.
Governor Mitch Daniels put the final stamp on the measure. He signed it into law Wednesday afternoon.
Bill sponsor Carlin Yoder says despite challenges in getting the bill through, he thinks it’s the right move for the state.
The law prohibits unions and companies from requiring dues from non-members.
The Senate passed the measure by a 28-to-22 vote. Nine Republicans joined Democrats in opposing it.
Opponents say it weakens organized labor and will reduce wages and benefits for all Hoosiers.