1999年4月22日，理事会和成员国政府代表在理事会内举行会议，讨论关于改进成员国当局之间合作的行为守则，以打击跨国社会保障福利和缴款欺诈及未申报工作，以及关于跨国雇用工人的决议

Resolution of the Council and the Representatives of the Governments of the Member States, meeting within the Council of 22 April 1999 on a Code of Conduct for improved cooperation between authorities of the Member States concerning the combating of transnational social security benefit and contribution fraud and undeclared work, and concerning the transnational hiring-out of workers