Judgment of the Court 16 May 1991

In Case C-358/89,

THE COURT, composed of O. Due, President, G. F. Mancini, T. F. O'Higgins, J. C. Moitinho de Almeida, G. C. Rodriguez Iglesias and M. Diez de Velasco (Presidents of Chambers), Sir Gordon Slynn, C. N. Kakouris, R. Joliét, F. A. Schockweiler, F. Grévisse, M. Zuleeg and P. J. G. Kapteyn, Judges, Advocate General: F. G. Jacobs Registrar: J. A. Pompe, Deputy Registrar

having regard to the Report for the Hearing,

after hearing oral argument by the parties at the hearing on 19 February 1991, in which Péchiney Électrométallurgie SA and the Chambre Syndicale de l'Électrométallurgie et de l'Électrochimie, the interveners, were represented by J. Günther, of the Paris Bar,

after hearing the Opinion of the Advocate General delivered at the sitting on 21 March 1991,

gives the following

Judgment

Costs

1 Language of the case: French.