Article 1 
1. With effect from 1 July 2013, the weightings applicable to the remuneration of officials, temporary staff and contract staff of the Union serving in third countries, payable in the currency of the country of employment, shall be as set out in the Annex. 2. The exchange rates for the calculation of such remuneration shall be established in accordance with Regulation (EU, Euratom) No 966/2012 of the European Parliament and of the Council ( 3 ) and shall correspond to the rates applicable on 1 July 2013.
Article 2 
1. The institutions shall make back-payments in the event of an increase in remuneration as a result of the application of the weightings set out in the Annex. 2. The institutions shall make retrospective downward adjustments to remuneration in the event of a reduction in remuneration as a result of the weightings set out in the Annex for the period between 1 July 2013 and the date of entry into force of this Regulation. 3. Retrospective adjustments involving the recovery of sums overpaid shall be restricted to a period of six months preceding the date of entry into force of this Regulation. Recovery shall be spread over no more than 12 months from that date.
Article 3 
This Regulation shall enter into force on the date of its publication in the Official Journal of the European Union .