(Indianapolis, Ind.) - A new Indiana law which took effect Thursday may already be facing a legal challenge.

State Rep. Bob Bischoff (D-Greendale)

State Rep. Bob Bischoff (D-Greendale) wrote the law which allows most employees to take their guns to work as long as the firearms are safely stored and out of sight in the employee’s car. Places like schools, domestic violence shelters, and day cares are exempt.

Critical of the law since it was introduced in the state legislature, the Indiana Chamber of Commerce says feedback from its members has been overwhelmingly negative towards the law.

Some member businesses may challenge the statute on the grounds it favors a person's gun rights over business owners’ property rights.

The Associated Press reported workers at ArcelorMittal, a steel plant in northwest Indiana, have been instructed to not bring their guns to work because federal property rights law trumps the new state law.

The National Rifle Association says Indiana is the thirteenth state to enact a similar workplace protection law.

Bischoff’s law also includes a provision which prevents state and local municipalities from outlawing the possession, purchase and ownership of firearms or ammunition during declared states of emergency.