double-back
v.— «“They used to have one shift that was stuck on afternoons all the time. That wasn’t fair. It wasn’t fair at all for these people, because that was a condition that they got hired that they had to stay on an afternoon shift plus they had to double-back on the Saturday shift.” The double-back was physically very difficult, Susie said, but management “just didn’t care. They had no compassion, no nothing.”» —“What Do Women Want from Union Representation?” by Anne Forrest Hecate Oct. 1, 2000. (source: Double-Tongued Dictionary)