No. 93-1831. Argued February 3, 1995. Decided March 3, 1995. Appeal from the National Labor Relations Board and Cross-Application for Enforcement. Clifford P. Chaiet, Melville, NY, argued the cause, for petitioners. Vincent J. Falvo, Atty., N.L.R.B., Washington, DC, argued the cause, for respondent. With him on the brief were Linda Sher, Acting Associate Gen. Counsel, Aileen A. Armstrong, Deputy Associate Gen. Counsel, and Peter Winkler, Supervising Atty., N.L.R.B., Washington, DC. Before: WALD,