The EECMY supports the idea that all Christian communities are working for the same goal and believes that she has to contribute something as well as to gain from worldwide Christian communities. Therefore, EECMY became a member of the Lutheran World Federation in 1963, (though the Addis Ababa Mekane Yesus Congregation was a member from 1957), a member of the All Africa Conference of Churches in 1974 and of the World Council of Churches in 1979. She joined the World Alliance of Reformed Churches as of 2000 and there has been very good relationship with these Church organizations all along.
The EECMY has a good working relationship with the Ethiopian Orthodox Church, the Ethiopian Catholic Church and other Evangelical Churches in Ethiopia. She is also a founding member of the Christian Relief and Development Association (CRDA), the Evangelical Churches Fellowship of Ethiopia (ECFE) and the Joint Relief Partnership (JRP) all operating in Ethiopia. She is also making contract with the leadership of the Islamic Supreme Council of Ethiopia to create a healthy relationship.