1. In this act, unless the context indicates a different meaning,
(a) “Commission” means the Commission de la santé et de la sécurité du travail;
(b) “employment” means employment in underground works and surface employment, in drilling, loading, hauling, crushing, grinding, sifting and screening of stone and ore, stone cutting and polishing and ore treatment, and any other employment on a mine or quarry site where a person is exposed to asbestos or silica dust;
(c) “worker” means a person, except a student, holding employment contemplated in paragraph b, in a mine or quarry, including a member of the executive or support staff;
(d) “disposable net income” means the gross annual income of the worker from employment contemplated in paragraph b, less the annual deductions provided for by the taxation tables, and the deductions for the Québec Pension Plan, the Québec Health Insurance Plan and unemployment insurance.