So long as the information is "relevant to the union's representational functions," the employer is obligated to provide it upon request. Oil, Chem. & Atomic Workers Local Union No. 6–418 v. NLRB , 711 F.2d 348, 357 (D.C. Cir. 1983) ; see N.Y. & Presbyterian Hosp. v. NLRB , 649 F.3d 723, 729 (D.C. Cir. 2011). This standard is in keeping with the observation in Acme Industrial Co. that a "liberal standard as to relevancy" decreases the burdens and expense of resolving labor conflicts by providing the union with an opportunity to evaluate the merits of a claim without forcing it to "take a grievance all the way through to arbitration."