An employee whose relations with his employer are governed, or have been from time to time governed, by a contract of employment which normally involves employment for eight hours or more, but less than sixteen hours, weekly shall nevertheless, if he satisfies the condition referred to in sub-paragraph (2), be treated for the purposes of this Schedule (apart from this paragraph) as if his contract normally involved employment for sixteen hours or more weekly, and had at all times at which there was a contract during the period of employment of five years or more referred to in sub-paragraph (2) normally involved employment for sixteen hours or more weekly.

Sub-paragraph (1) shall apply if the employee, on the date by reference to which the length of any period of employment falls to be ascertained in accordance with the provisions of this Schedule, has been continuously employed within the meaning of sub-paragraph (3) for a period of five years or more.

In computing for the purposes of sub-paragraph (2) an employee’s period of employment, the provisions of this Schedule (apart from this paragraph) shall apply but as if, in paragraphs 3 and 4, for the words “sixteen hours” wherever they occur, there were substituted the words “eight hours”.