The U.S. Supreme Court backed the rights of pregnant workers, reviving a lawsuit by a former United Parcel Service Inc. driver who left her job when the company wouldn’t provide the less strenuous work recommended by her doctor.

The justices, voting 6-3, sent the case back for a possible trial, which would center on UPS’s reasons for refusing to accommodate Peggy Young’s needs while giving temporary assignments to workers recovering from on-the-job injuries.

“The Supreme Court has made clear that federal law mandates employers to accommodate pregnant women on the same terms as everyone else,” Carol Robles-Roman, president of the women’s-rights group Legal Momentum, said in a statement.