The Arbitrator sustained the grievance. The Arbitrator found that the Agency violated the CBA by leaving posts vacant rather than filling them with regular staff officers or through overtime assignments. Id. at 11. The Arbitrator did not specify the provision of the CBA on which he relied. However, he referenced Article 27, entitled, “Health and Safety,” in the “Relevant Contract Language” section of the award. Id. at 3. Article 27 of the CBA requires the Agency to reduce hazards to its employees “to the lowest possible level, without relinquishing its rights under 5 USC § 7106” of the Statute. Award at 3. The Arbitrator was also presented with the Union’s argument that the CBA “mandates concern over health and safety issues inherent when [p]osts are not filled.” Id. at 6-7. In addition, citing another arbitration award, the Union argued to the Arbitrator that “[m]anagement is permitted to vacate posts only for good reason[.]” Id. at 7. The Arbitrator concluded that “[m]anagement had a clear obligation . . . consistent with . . . prior arbitration cases cited by the Union, to cover and fill [p]ost positions.” Id. at 12.