These organisations work across various sectors in Luxembourg, focusing on vulnerable populations including migrants, refugees, the homeless and other individuals living in poverty.

[2] On 19 July 2024, national media reported that Caritas lodged a police complaint against financial irregularities in FCL and CAS, claiming that one high-ranking employee who had fled abroad had embezzled more than 60 million euro.

[7][8] Described as a "CEO Scam" by Luxembourg police, the accused employee allegedly bypassed authorization procedures to procure payment of fake invoices.

[10] In September 2024, due mainly to public outcry over the scandal, Caritas Luxembourg shuttered its numerous overseas aid projects.

Core initiatives are its four social grocery stores and its Kleederstuffen ('clothing halls'), providing essential support to people for basic needs like food, clothing, and heating.

[2][13][14] Another large target group are children and young people, for whom Caritas offers a range of services such as 23 nurseries and daycare centres, along with three youth centers.