Opinion of Mr Advocate General Tesauro delivered on 16 January 1992

1 Original language: Italian.

2 OJ 1991 L 26, p. 1.

3 Greek Official Journal No 107 of 8 August 1983, p. 1926.

4 OJ 1987 L 76, p. 18.

5 Greek Official Journal No A 43 of 23 March 1990.

6 Judgment in Joined Cases C-19 and 20/90 Karella and Karellas [1991] ECR I 2691).

7 Under those provisions, which have not been referred to by the national court in the present case, the Member States may derogate in particular from Articles 25 and 29 to the extent that such derogations are necessary for the adoption or application of provisions designed to encourage the participation of employees, or other groups of persons defined by national law, in the capital of undertakings.

8 Case 135/83 Abels v Bedrijfsvereniging voor de Metaalindustrie en de Electrotecbnische Industrie [1985] ECR 469, paragraph 28.

9 OJ 1977 L 61, p. 26.

10 Judgment in Case C-362/89 d'Urso and Others v Ercole Marelli Elettromeccanica Generale SA and Others [1991] ECR I-4105, paragraphs 32 and 34.

11 Judgment in Case 299/84 Neumann v Balm [1985] ECR 3663, paragraph 12; judgment in Case 311/84 CBEM v CLT and IPB [1985] ECR 3261, paragraph 10.