Bucy said the state is seeing the positive effects of the reform legislation passed. She said the agency will also be reconvening the Labor Management Advisory Council to further study the impact. Membership includes workers, business managers and others affected by the issue.

Diana Ferriter, administrator for the Employment Relations Division, said that the cost of the insurance dropped another 5 percent in Montana this summer. Last year there was no change following a steep decline of 22 percent in the summer of 2011 after the legislation was signed into law.

"These trends we are seeing in reduced number of claims and controlling medical costs will just help our economy in the state while also keeping workers safe and healthy during their work life. And hopefully it is a sign that things will improve," she said.

Ferriter said a big issue remains Montana's relatively high rate of workplace injuries. She said the state still injures workers at much higher rates than elsewhere. And the injuries aren't restricted to jobs most people consider high risk, like construction or mining.

In the past year, health care and social assistance workers had the highest rate of workers' compensation injuries. The other most injury-prone fields were public administration, retail, education, food services, followed by construction and manufacturing.

The most common injury was a strain, followed by falling or tripping, and then being struck by an object.