The number of workers compensation claims in Minnesota fell slightly from 2010 to 2011, but the state saw a small uptick in the cost per claim during that time, according to a Minnesota Department of Labor and Industry analysis.

Find out the nation’s top 10 largest workers compensation systems in Business Insurance’s latest gallery.

An Oklahoma firefighters union and two state lawmakers filed a lawsuit Wednesday asking the Oklahoma Supreme Court to declare a workers compensation reform law adopted in May unconstitutional.