There is possibly a connection with the pay system, as benefits are paid under that plan.
You do pay that through your payroll deductions, so we can verify if this is in fact a change that results because of the change in the pay system or if it's just a change in the natural cycles. Sometimes there are some cycles that change from year to year.
I will say for the Treasury Board Secretariat as a department it's not a huge revenue generating department as you would notice. They are very much fees related to being the employer for the public service. There's parking, and you mentioned health care, but really the core of the department is more around monitoring other departments and agencies for their spending.