Judgment of the Court (Second Chamber) 7 March 1991

In Case C-10/90, REFERENCE to the Court under Article 177 of the EEC Treaty by the Bundessozialgericht (Federal Social Court) for a preliminary ruling in the proceedings pending before that court between

THE COURT (Second Chamber), composed of: T. F. O'Higgins, President of the Chamber, G. F. Mancini and F. A. Schockweiler, Judges, Advocate General: M. Darmon, Registrar: V. Di Bucci, Administrator,

after considering the written observations submitted on behalf of Maria Masgio, by Kurt Leingärtner and Gert Siller, of the Federal Law Service of the Deutscher Gewerkschaftsbund (German Trades Unions Federation), Kassel, Federal Republic of Germany; the Government of the Kingdom of Belgium, by Philippe Busquin, Minister for Social Welfare, acting as Agent; and the Commission of the European Communities, by Maria Patakia, a member of its Legal Department, acting as Agent, assisted by Bernd Schulte, of the Max-Planck-Institut für ausländisches und internationales Sozialrecht, Munich, Federal Republic of Germany,

having regard to the Report for the Hearing,

after hearing oral argument from Mrs Masgio and the Commission at the hearing on 14 November 1990,

after hearing the Opinion of the Advocate General at the sitting on 15 January 1991,

gives the following

Judgment

Costs

1 Language of the case: German.