The construction sector, known for its large number of mobile workers in Europe, was addressed through various actions. These encompassed information activities such as an EU-wide awareness-raising campaign, as well as cooperation and enforcement activities, including concerted and joint inspections. These efforts were supported by a comprehensive analytical report that focused on issues related to information provision, enforcement of labour mobility laws, social security coordination regulations, and cooperation between Member States. Highlighting the results obtained, the booklet serves as a starting point for ELA's ongoing commitment to the construction sector.