A federal judge has doubled the compensation awarded to four fracking crane operators who sued a drilling company for failing to pay overtime wages.

U.S. District Judge Mark Kearney of the Western District of Pennsylvania granted the plaintiffs’ post-trial motion for liquidated damages in Mozingo v. Oil States Energy Services. In October, a jury found Oil States Energy Services “willfully and recklessly” failed to pay overtime wages to the operators, and awarded them each tens of thousands of dollars in compensation.