Article 33

(a) prescribed classes of employees, constituting not less than 50 per cent. of all employees, and, for benefit in respect of death of the breadwinner, also their wives and children; or

(b) where a declaration made in virtue of Article 3 is in force, prescribed classes of employees, constituting not less than 50 per cent. of all employees in industrial workplaces employing 20 persons or more, and, for benefit in respect of death of the breadwinner, also their wives and children.