National Federation of Federal Employees, Local 1309 v. Department of the Interior

The Federal Service Labor-Management Relations Statute requires federal agencies and the unions that represent their employees to “meet and negotiate in good faith for the purposes of arriving at a collective bargaining agreement.” 5 U. S. C. § 7114(a)(4). We here consider whether that duty to bargain extends to a clause proposed by a union that would bind the parties to bargain midterm — that is, while the basic comprehensive labor contract is in effect — about subjects not included in that basic contract. We vacate a lower court holding that the statutory duty to bargain does not encompass…