The Convention was adopted by Resolution A/RES/45/158 of 18 December 1990. It entered into force on 1 July 2003. The States Parties amount to 56 (in October 2021). The Convention sets out the rights of migrant workers and members of their families.
https://treaties.un.org/pages/ViewDetails.aspx?src=TREATY&mtdsg_no=IV-13&chapter=4