According to a Target (TGT) memo that the labor group Centro de Trabajadores Unidos en la Lucha provided to Businessweek, Target’s Twin Cities janitorial vendors will be required not only to comply with federal and Minnesota labor laws but also to give workers the option of at least one day off each week; establish safety committees and let employees choose half the members; and invite unions to meet at least once a year with management.

Most significantly, the document instructs each vendor—unless released from the obligation at Target’s discretion—to reach deals with labor groups that want to represent their workers. According to the memo, such deals should dictate “terms and conditions of employment” (making life easier for workers) but they must prohibit “economic interference with Target’s operations” by labor groups (making life easier for management).

In other words, Target—whose U.S. store workforce is 100 percent union free—is telling companies that want to clean its Twin Cities buildings to make nice with unions.