Opinion of Mr Advocate General Lenz delivered on 10 June 1987

1 Translated from the German.

2 Registered at the Court on 26 June 1985.

3 I refer in this regard to the following four judgments; judgment of 14 March 1978 in Case 98/77 Max Schaap v Bestuur van de Bedrijfsvereniging voor Bank- en Verzekeringswezen Groothandel en Vrije Beroepen, [1978] ECR 707; judgment of 2 July 1981 in Joined Cases 116, 117 and 119 to 121/80 Rijksdienst voor Werknemerspensioenen v Giorgio Celestre and Others [1981] ECR 1737; judgment of 5 May 1983 in Case 238/81 Raad van Arbeid v Van der Bunt-Craig [1983] ECR 1385; judgment of 13 March 1986 in Case 296/84 Antonio Sinatra v Fonds national de retraite des ouvriers mineurs (FNROM) [1986] ECR 1047.

4 See the judgment in Case 98/77 Schaap [1978] ECR 707, paragraphs 10 and 11 at p. 714; sec also the judgments in Celestre, Van der Bunt-Craig and Sinatra, cited above.

5 Judgment of 5 July 1983 in Case 171/82 Biagio Valentini v ASSEDIO, Lyon [1983] ECR 2157, paragraph 13 at p. 2170.

6 Opinion of Mr Advocate General Römer of 3 December 1969 in Case 34/69 Caisse d'assurance vieillesse des travailleurs salariés de Paris v Jeanne Duffy [1969] ECR 605; Opinion of 25 March 1982 of Mr Advocate General VerLoren van Themaat in Case 132/81 Rijksdienst voor Werknemerspensioenen v Alice Vlaeminck [1982] ECR 2965.

7 Judgment of 5 May 1983 in Case 238/81 Raad van Arbeid v Van der Bunt-Craig [1983] ECR 1385, paragraph 15 at p. 1401.

8 Judgment of 17 December 1975 in Case 93/75 Jacob Adlerblum v Caisse national d'assurance vieillesse des travailleurs salariés [1975] ECR 2151.

9 Judgment of 2 July 1981 in Joined Cases 116, 117 and 119 to 121/80 Rijkdienst voor Werknemerspensioenen v Giorgio Celestre and Others [1981] ECR 1737, paragraph 10 at p. 1753.