No. 87-1476. Heard December 7, 1987. Decided March 30, 1988. Roberto E. Vega-Pacheco with whom Roberto O. Maldonado Nieves and Cancio, Nadal Rivera, Hato Rey, P.R., were on brief, for petitioner. Howard E. Perlstein, Supervisory Atty., with whom Harriet Lipkin, Rosemary M. Collyer, General Counsel, John E. Higgins, Jr., Deputy General Counsel, Robert E. Allen, Associate General Counsel, and Aileen A. Armstrong, Deputy Associate General Counsel, Washington, D.C., were on brief, for respondent. Petition