8. For the purposes of sections 6, 7, 10 and 12, an employee is deemed to hold pensionable employment when the person simultaneously holds more than one employment referred to in Schedule I constituting at least 40 % of the regular time of a full-time employee holding such employment, if the employee’s classification is related to each such employment.
The Government may, by regulation, exclude employees from the application of the first paragraph by reason of the class to which they belong or their conditions of employment.