The Sisters of Charity Federation includes 13 congregations of women religious in the U.S. and Canada, rooted in the traditions of St. Vincent de Paul, St. Louise de Marillac, and St. Elizabeth Ann Seton. The Sisters of St. Martha of Antigonish, whose beginnings are tied to Sisters of Charity of Halifax, joined the Federation in 2003. With around 1870 members serving across 26 countries, the Federation advocates for systemic change to eliminate poverty.

The Federation NGO gives a voice to the poor on an international platform and provides firsthand knowledge to decision makers in areas like Economic Development, Human Rights, and Women & Children. Sisters and Associates can serve as an NGO liaison, interns, and participants in various UN meetings. Dr. James Walters, EdD, represents the Sisters of Charity Federation NGO at the United Nations. 

Established in 1954, the Canadian Religious Conference brings together the leaders of 250 Catholic congregations of women and men religious in Canada. Every two years, the organization holds a General Assembly, where members from across Canada gather to share practices, address challenges, and foster solidarity in their mission to proclaim the vitality of Religious Life in the Church and Canadian society. Sr. Brendalee Boisvert served as CRC’s Atlantic Representative from 2016. Elected Vice President in 2021, she continued as Atlantic Representative for two years. In 2023, she became President of the CRC Administrative Council for a two-year term.

Founded in 1956, the Leadership Conference of Women Religious (LCWR) supports leaders of Catholic women’s congregations across the U.S. in advancing the mission of the Gospel in a collaborative manner. CSM is an Associate Member, with two members of the Leadership Team attending the annual assembly for broader insights on societal and Religious Life issues.

The International Union of Superiors General (UISG) provides a place for female Superiors General to meet in an ecclesial setting. As Congregation Leader, Sr. Brendalee Boisvert has been a member of the English Canadian sector of the UISG for ten years. Together, these Leaders of English-speaking Canadian Congregations gather to have conversation and share on ways in which each of them is assisting their Congregation to move forward. Every third year, the sectors from around the world have a meeting in Rome, organized by the UISG Administration. This provides a truly global experience, at which the Pope offers his insights, support, and encouragement.

Association of Treasurers of Religious Institutes (ATRI) supports and enhances the ministry of financial administration and structures of Canadian religious congregations "through inclusive collaboration and in fidelity to Gospel stewardship" (ATRI Mission Statement). The members of CSM Leadership Team and Finance Department attend an annual conference that provides a fantastic opportunity for professional development, collaboration, and relationship building for those involved in the administrative, financial, and legal aspects of a religious institute.

The Sisters of St. Martha owned and governed St. Martha's Regional Hospital from its foundation in 1906 until 1996. Prior to the transfer of ownership, the Sisters negotiated a Mission Assurance Agreement with the Government of Nova Scotia. Mission Assurance Advisory Council (MAAC) works to assure the continuation of the traditional identity, mission and philosophy of the hospital.

The Congregation of the Sisters of St. Martha is a Religious Institute of Pontifical Right and as such is under the direct authority of Holy See. Notwithstanding, its home has always been the Diocese of Antigonish and Sisters have maintained a good relationship with the bishop and clergy of the Diocese of Antigonish.

Martha Retreat Centre in Lethbridge, Alberta, opened in 1968 by CSM, continues its important mission of providing spiritual direction under a different leadership. Martha Retreat Centre Society assumed responsibility of the operation, management and ministry of this Centre.