4. For the purposes of the valuation of differences in compensation, the flexible pay referred to in section 65 of the Act or the value of a benefit having pecuniary value referred to in section 66 of the Act must be added to the hourly rate of remuneration assigned pursuant to sections 2 and 3 where(1) the flexible pay or the benefit having pecuniary value is currently available in the enterprise; and
(2) if the relevant job class existed in the enterprise it would in all likelihood be eligible for the flexible pay or the benefit having pecuniary value.