There are different levels of deputy ministers, but there is a portion for a deputy minister, for example, at the first level, DM-1. Up to 10% of the pay is basically held aside for the purposes of ascertaining whether that deputy has reached the objectives that have been set in the person's performance agreement. If that person attains those objectives, the person is entitled to that 10%. If the person surpasses those objectives, then there's the possibility of an additional bonus, which for a deputy at the DM-1 level represents an additional 5%.
On November 7th, 2006. See this statement in context.