Emoluments of part-time employments
39. In ascertaining for the purposes of these regulations whether, and how far, the emoluments of alternative employment fall short of emoluments which have been lost where those emoluments were payable in respect of two or more part-time employments, the emoluments of the alternative employment or of the aggregate of two or more alternative employments shall be apportioned in the proportion which the emoluments of the part-time employments bore to each other.