I'm sorry; in 2010 the act was amended, as you know, to include all members of Parliament, all members of the House of Commons, all members of the Senate, and any exempt staff who were in the offices of the leader of the opposition in the House of Commons or the leader of the opposition in the Senate—those who were appointed specifically pursuant to subsection 128(1) of the Public Service Employment Act.
On March 1st, 2012. See this statement in context.