17.2.2005 Official Journal of the European Union L 46/1 (Acts whose publication is obligatory) COUNCIL REGULATION (EC, EURATOM) No 257/2005 of 4 February 2005 laying down the weightings applicable from 1 July 2004 to the remuneration of officials, contract staff and temporary staff of the European Communities serving in third countries and of certain officials remaining in post in the 10 new Member States for a maximum period of 15 months after accession THE COUNCIL OF THE EUROPEAN UNION, Having regard to the Treaty establishing the European Community, Having regard to the Treaty establishing the European Atomic Energy Community, Having regard to the Staff Regulations of officials of the European Communities and the conditions of employment of other servants of the Communities laid down by Regulation (EEC, Euratom, ECSC) No 259/68(!), and in particular the first subparagraph of Article 13 of Annex X thereto, Having regard to the 2003 Act of Accession, and in particular Article 33(4) thereof, Having regard to the proposal from the Commission, Whereas: (1) It is necessary to take account of changes in the cost of living in third countries and to determine accordingly the weightings applicable from 1 July 2004 to remuneration payable in the currency of the country of employment to officials, contract staff and temporary staff of the European Communities serving in third countries and of certain officials remaining in post in the 10 new Member States for a maximum period of 15 months after 1 May 2004. (2)  The weightings in respect of which payment has been made on the basis of Regulation (EC, Euratom) No 1785/2004 (3 may lead to retrospective upward or downward adjustments to remuneration. () O] L 56, 431968, p. 1. Staff Regulations and conditions of employment as last amended by Regulation (EC, Euratom) No 857/2004 (O] L 161, 30.4.2004, p. 11). () O] L 317, 16.10.2004, p. 1. (3)  Provision should be made for back-payments in the event of an increase in remuneration as a result of the new weightings. (4 Provision should be made for the recovery of sums overpaid in the event of a reduction in remuneration as a result of the new weightings for the period between 1 July 2004 and the date of entry into force of this Regulation. (5)  Provision should be made for any such recovery to be restricted to a period of no more than six months preceding the date of entry into force of this Regulation and for its effects to be spread over a period of no more than 12 months as from that date, as is the case with the weightings applicable within the Community to remu- neration and pensions of officials and other servants of the European Communities, HAS ADOPTED THIS REGULATION: Article 1 With effect from 1 July 2004, the weightings applicable to the remuneration of officials, contract staff and temporary staff of the European Communities serving in third countries and of certain officials remaining in post in the 10 new Member States for a maximum period of 15 months after accession, payable in the currency of the country of employment, shall be as shown in the Annex hereto. The exchange rates used to calculate this remuneration shall be established in accordance with the rules for the implementation of the Financial Regulation and shall correspond to the date referred to in the preceding subparagraph. Article 2 1. The institutions shall make back-payments in the event of an increase in remuneration as a result of the weightings shown in the Annex.