No. 85-4145. Argued December 19, 1985. Decided March 11, 1986. Daniel E. Clifton, Clifton Schwartz, New York City, for petitioners Roberto Sanchez and Elva Rodriguez. William R. Stewart, Deputy Asst. Gen. Counsel, N.L.R.B., Washington, D.C. (Rosemary M. Collyer, Gen. Counsel, John E. Higgins, Jr., Deputy Gen. Counsel, Robert E. Allen, Associate Gen. Counsel, Elliott Moore, Deputy Associate Gen. Counsel, Barbara A. Atkin, of counsel), for respondent N.L.R.B. Petition for the review from the National