31.12.83 Official Journal of the European Communities NoL377/1 (Acts whose publication is not obligatory) COMMISSION COMMISSION DECISION of 22 December 1983 on the management of the European Social Fund (83/673/EEC) THE COMMISSION OF THE EUROPEAN COMMUNITIES, ) Having regard to' the Treaty establishing the European Economic Community, Having regard to Council Decision 83/516/EEC of .17 October 1983 on the tasks of the European Social Fund (%), Having regard to Council Regulation (EEC) No 2950/83 of 17 October 1983 on the implementation of Decision 83/516/EEC on the tasks of the European Social Fund (?), and in particular Articles 4 and 9 thereof, ' Whereas forms should be introduced for applications for assistance and claims for payment; Whereas a separate application is needed for each type of operation listed in the form set out in Annex 1 in order to meet the requirements of sound management of resources for which it must be possible to make an accurate evaluation of operations _on the basis of the provisions of Decision 83/516/EEC and the guidelines for the management of the Fund; Whereas it is necessary to fix a time limit for the submission of applications for assistance under Article 3 (2) of Decision 83/516/EEC and for final payment ’ claims; (*) OJ No L 289, 22. 10. 1983, p. 38. (*) OJ No L 289, 22. 10. 1983, p. 1. Whereas the duration of assistance for operations under Article 3 (1) of Decision 83/516/EEC should coincide with the financial year; whereas an upper limit should be set on the duration of assistance for multiannual operations under Article 3 (2) of that Decision; Whereas it is essential that the Member States should notify the Commission immediately of any change in the factors on which approval of assistance was based; Whereas in the interests of sound management of resources, any sums not used must be released immediately so that they can be reallocated to other _ operations eligible for assistance; Whereas the Commission must be informed immediately if any operation which has received Fund assistance is the subject of an investigation because of suspected irregularities; Whereas it is essential that the Commission should receive regular-information from the Member States in view of the fact that the effectiveness of Fund aid stems from a detailed knowledge of the operations ~ which have received assistance, HAS ADOPTED THIS DECISION: Article 1 1.  Applications for assistance under Article 3 of Decision 83/516/EEC shall be submitted on the form set out in Annex 1. ‘