Ontario Seniors' Secretariat - About Us
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About the Ontario Seniors’ Secretariat

The Ontario Seniors’ Secretariat (OSS) advocates for, undertakes and supports policy and program initiatives that help improve the quality of life of seniors, and undertakes public education efforts for and about seniors. We also work with seniors’ organizations and across government to develop programs and services that meet the needs of seniors and help them enjoy safe, active and healthy lives. We simplify access to government for seniors and their families.

The secretariat actively promotes the contributions seniors make to Ontario communities.

Minister Mario Sergio Photo of Mario Sergio

Mario Sergio was first elected to the Ontario legislature in 1995 as the MPP for Yorkview. He was elected as the MPP for York West in 1999, then re-elected in 2003, 2007, 2011 and 2014. He was appointed Minister Responsible for Seniors Affairs in February 2013.

Full Biography

Contact Us


  • Toll Free: 1-888-910-1999

TTY (for the hearing impaired)

  • 1-800-387-5559


  • 416-326-7078


Ontario Seniors' Secretariat
777 Bay Street, Suite 601C
Toronto ON M7A 2J4