As an example from Beldin's link to the agreement (now lapsed but currenly being re-negotiated):
[I]Toronto ACC 1st increment: $82K Canadian (Ai-05-Operational+YZ OFP)
Toronto ACC 11th increment: $106K Canadian (Ai-05-Operational+YZ OFP)
Now only the Ai-05-OP bit counts in the overtime calc (not the OFP)
Beldin gets around $2500 less a year in OFP at YVR ACC (are you ACC?) but lives in the most picturesque and civilised part of the country