SOUTH SALT LAKE — About a dozen employees of Hadley Auto Transport, 2765 S. 850 West, went on strike Monday morning, while contract negotiations are under way between their union, the International Brotherhood of Teamsters Carhaul Division, and Hadley's parent company, Performance Transportation Services Inc.

The Utah employees are part of 1,250 striking Teamster members throughout the United States working for Performance Transportation companies. Hadley is a company that hauls cars from manufacturers to dealerships.

Most of the striking employees are truck drivers, and the strike will continue until negotiations resume, Teamsters spokeswoman Leigh Strope said.

Performance Transportation, headquartered in suburban Detroit, is the nation's second largest vehicle hauler, according to Crain's Detroit Business. Last week, a bankruptcy court judge permitted Performance Transportation to cut the pay of union drivers by 15 percent to meet ongoing operational expenses while it bargained with the Teamsters.