No. 86-5225. Argued February 2, 1987. Decided May 11, 1987. Elliott Moore, Deputy Associate Gen. Counsel, N.L.R.B., Washington, D.C., Nancy Hunt (argued), Peter Winkler, Bernard Gottfried, Director Region 7, N.L.R.B., Patrick McNamara, Detroit, Mich., for petitioner. J. Laevin Weiner (argued), C. Robert Wartell, William E. Sigler, Maddin, Weiner, Hauser, Wartell and Roth, Southfield, Mich., for respondent. Petition from the National Labor Relations Board. Before KENNEDY, JONES and NORRIS, Circuit