The U.S. Equal Employment Opportunity Commission is appealing a ruling that it has to repay more than $4.5 million dollars for legal costs to the trucking company CRST Van Expedited.

The move by the agency comes after a federal judge in Iowa last month ordered the payment after EEOC earlier lost a case against CRST, over claims of sexual harassment of female drivers, that was first filed in 2007.

The lawsuit, filed on behalf of all female drivers subjected to "a sexually hostile and offensive work environment," was dismissed in 2010 after a judge found the claims “unreasonable or groundless," with the more than $4.5 million judgment being awarded to CRST.

Earlier this year CRST reportedly agreed to settle the claim for $50,000, but would continue an attempt to recover money from EEOC that a judge said it was owed.