7. For the purposes of section 20 of the Act, the presumptive gross income of a victim who, at the time of the accident, holds a casual or part-time employment which corresponds to the employment that the Société determined for him, is the gross income earned by the victim from this employment, computed according to sections 3 or 4, projected on an annual basis and readjusted according to the adjustment factor foreseen in Schedule 1.
S.Q., 1990, c. 19, s. 11.