The binding legal principles established are: (1) Under s 104(2)(b) of the Labour Act (as amended by Act 17 of 2002), employees acquire the right to resort to collective job action only after an attempt has been made to conciliate the dispute and a certificate of no settlement has been issued under s 93, not merely upon expiry of the 14-day notice period. (2) A right to engage in collective job action, once acquired, is not lost ipso facto by failure to exercise it immediately, but only if not exercised within a reasonable time without reasonable explanation. (3) The Minister has no statutory power to issue a second show cause order in the same matter concerning the same dispute after having already issued a first show cause order that was dealt with by the Labour Court. (4) Collective job action is only permissible for disputes of interest (concerning creation of new rights such as wage increases), not disputes of right (concerning existing legal rights and obligations).