(1)  An industrial agreement duly registered extends to and is binding on –

(a) the parties who execute the agreement or concur with the agreement;

(b) the members for the time being of an employee organization on whose behalf that organization has entered into the agreement;

(c) every employee who is, at any time while the agreement is in force, employed at a work site or place to which the agreement applies by an employer on whom the agreement is binding; and

(d) the members for the time being of an employer organization on whose behalf the organization has entered into the agreement.

(2)  An industrial agreement registered under section 56 is enforceable in all respects as if it were an award.