Ontario's "Ending Mandatory Retirement Statute Law Amendment Act, 2005", which was enacted by the legislative assembly in December 2005, takes effect on December 12, 2006. When the legislation takes effect, it will amend the Ontario Human Rights Code to protect people aged 65 and over from age discrimination for most employment purposes.
The Ministry of Labour has updated its FAQ: Mandatory Retirement and also maintains a Mandatory Retirement website.
Source: Ontario Ministry of Labour News Release (November 14, 2006)
Other Sources: Hamilton Spectator "Mandatory retirement soon to be obsolete" (November 28, 2006)