(1) A trade union of employees, representing a class or classes of employees, and a trade union of employers may -
(a) enter into or vary an agreement (in this Act referred to as a "joint safety and health agreement") providing practical guidance to the employees and employers with respect to safety, health and welfare at work including the requirements of the relevant statutory provisions, and
(b) apply to the Authority seeking approval for the agreement or its variation.
(2) The Authority may approve of a joint safety and health agreement where it is satisfied that -
(a) the parties concerned consent to the approval sought,
(b) the agreement is expressed to apply to all employees of a particular class and their employers and the Authority is satisfied that it is normal and desirable that it should so apply,
(c) the parties to the agreement are substantially representative of such employees and employers,
(d) the agreement does not conflict with the requirements of the relevant statut
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