Nos. 818, 819, Dockets 86-4101, 86-4161 and 86-4163. Argued February 13, 1987. Decided March 27, 1987. Larry Cary, New York City for petitioner Amalgamated Service and Allied Industries Joint Board, Amalgamated Clothing and Textile Workers Union, AFL-CIO, CLC. Howard L. Mocerf, St. Louis, Mo. (Tockman Wolk, of counsel), for petitioner-cross-respondent, Angelica Healthcare Services Group, Inc. William R. Stewart, Deputy Asst. Gen. Counsel, N.L.R.B., Washington, D.C. (Frances H. O'Connell, Atty., Rosemary