L 205/40 Official Journal of the European Communities 22.7.98 COMMISSION REGULATION (EC) No 1571/98 of 20 July 1998 implementing Council Regulation (EC) No 577/98 on the organisation of a labour force sample survey in the Community THE COMMISSION OF THE EUROPEAN COMMUNITIES, Having regard to the Treaty establishing the European Community, Having regard to Council Regulation (EC) No 577/98 of 9 March 1998 on the organisation of a labour force sample survey in the Community ('), and in particular Articles 1, 4(2) and 4(3) thereof, Whereas Article 1 of Regulation (EC) No 577/98 requires that, in the case of a continous survey, a list of the weeks making up the reference quarters for the survey is drawn up by the Commission; Whereas in accordance with Article 4(2) of Regulation (EC) No 577/98 a programme of ad hoc modules covering several years must be drawn up each year; Whereas implementing measures are necessary for defining the codification of the variables to be used for data transmission in accordance with Article 4(3) of Regu- lation (EC) No 577/98; Whereas the measures provided for in this Regulation are in accordance with the opinion delivered by the Statistical Programme Committee established by Council Decision 89/382/EEC, Euratom (3, HAS ADOPTED THIS REGULATION: Article 1 Reference quarters The definition of the reference quarters to be applied in the case of a continous survey for the years 1998 and 1999, are laid down in Annex I to the present Regulation. Article 2 Ad hoc modules A programme of ad hoc modules covering years 1999 to 2001 is laid down in Annex II to the present Regulation. The detailed list of information to be collected in the 1999 ad hoc module is laid down in Annex III to the present Regulation. Article 3 Codification of the variables The codification to be used for data transmission for the years 1998 and 1999 is laid down in Annex IV to the present Regulation. Article 4 Entry into force This Regulation shall enter into force on the day following its publication in the Official Journal of the European Communities. This Regulation shall be binding in its entirety and directly applicable in all Member States. Done at Brussels, 20 July 1998. () OJ L 77, 14. 3. 1998, p. 3. OJ L 181, 28. 6. 1989, p. 47. For the Commission Yves-Thibault DE SILGUY Member of the Commission