In 2014, HAŠK Mladost became a member of the EMCA network - European Multisport Club Association. EMCA was founded as an association of European multi-sport societies in 2013 at the Lazio Sports Center in Rome, Italy. In 2017, EMCA registered its headquarters in Brussels, Belgium as a non-governmental organization.

From 1.1.2015 to 30.6.2016 HAŠK Mladost participated in the Erasmus + Sport project Sport & Support coordinated by SS Lazio. The project aimed at social inclusion in sports. The project connected with various groups such as the youngest children, the elderly, children of lower financial status and people with disabilities. The central day of the project promotion was the organization of the Mladost Multisport Day at the Mladost Sports Park.

From 1.1.2017 to 30.06.2018 HAŠK Mladost was the coordinator of the Erasmus + Sport project “Sport MyWay” which aimed at creating a new innovative multi-sport program for children aged 6-11. year. During the project, an instruction manual was designed as the first publication of the EMCA Studia.