Association of Mineworkers and Construction Union and Others v Chamber of Mines of South Africa and Others

AMCU was the majority union at five individual gold mines but was a minority union across the employers' operations as a whole. In 2013, the Chamber of Mines, acting on behalf of mining companies including Harmony Gold, AngloGold Ashanti, and Sibanye Gold, negotiated a collective agreement with NUM, Solidarity, and UASA - unions representing the majority of workers in the gold mining sector. AMCU participated in negotiations but rejected the final offer. The three unions and the Chamber concluded a collective agreement on 10 September 2013 that expressly bound all employees, including non-members of the signatory unions, pursuant to section 23(1)(d) of the LRA. AMCU, not being a party to the agreement, notified the companies on 20 January 2014 that its members would strike from 23 January 2014. The Chamber applied urgently to the Labour Court for an interdict, which was granted and subsequently confirmed.

• Whether the statutory definition of 'workplace' in section 213 of the LRA applies to section 23(1)(d)
• Whether each individual mine constitutes a separate 'workplace' or whether all mines of each employer collectively constitute a single workplace
• Whether section 23(1)(d) of the LRA unjustifiably limits the constitutional rights to strike, collective bargaining, and freedom of association
• Whether section 23(1)(d) violates the rule of law and the principle of legality by permitting private actors to exercise public power without adequate safeguards
• Whether the collective agreement was validly extended to AMCU members under section 23(1)(d)

Leave to appeal granted. Appeal dismissed.

The binding legal principles established are: (1) The statutory definition of 'workplace' in section 213 of the LRA applies to section 23(1)(d) unless the context clearly indicates otherwise. (2) 'Workplace' is determined by functional organization and employee collectivity, not primarily by geographic location. Multiple places may constitute a single workplace. (3) Separate operations constitute separate workplaces only if they are independent by reason of size, function, or organization. (4) Majoritarianism is a foundational principle of the LRA that serves the legitimate purpose of promoting orderly collective bargaining. (5) Section 23(1)(d) of the LRA constitutes a justifiable limitation on the right to strike because: (a) it is narrowly tailored, applying only for the duration of the agreement and to issues covered by it; (b) it serves the important purpose of promoting collective bargaining; (c) minority unions retain organizational rights, recruiting rights, and bargaining rights; and (d) it is rational and promotes a legitimate governmental purpose. (6) The conclusion and extension of a collective agreement under section 23(1)(d) constitutes the exercise of public power by private parties due to its coercive effects, statutory source, and public interest rationale. (7) Exercises of power under section 23(1)(d) are subject to review under the principle of legality and must be rational and non-arbitrary, even though they do not constitute administrative action under PAJA.

The Court made several non-binding observations: (1) It noted the history of struggle by mineworkers for better wages and conditions, and the current intense contest between unions about which will represent workers. (2) It acknowledged that there is debate about whether the LRA's embrace of majoritarianism remains appropriate in changed conditions, with some suggesting the 'winner-takes-all approach' may need reassessment. (3) It suggested that a different definition of 'workplace' might have worked equally well or been fairer to smaller or emergent unions, but emphasized that the Court's task is not to choose between different policy options but to determine whether Parliament's choice passes constitutional scrutiny. (4) It left open the question of whether a particular section 23(1)(d) agreement might be vulnerable to attack for irrational and undue effects on minority unions, giving as an example where parties conclude an agreement in flagrant breach of an express agreement with minority unions. (5) It noted that interpretation and application are coequal tasks, and that applying a statutory definition involves elements of both fact and law and is both evaluative and interpretive. (6) It discussed the complexity of the constitutional scheme regarding public and private power, noting that the Constitution recognizes private actors may perform acts entailing exercise of public power and vice versa.

This judgment is significant in South African labour law for several reasons: (1) it authoritatively interprets the definition of 'workplace' in the LRA, clarifying that it focuses on functional organization and employee collectivity rather than geographic location; (2) it reaffirms majoritarianism as a foundational principle of the LRA that serves the legitimate purpose of promoting orderly collective bargaining; (3) it balances majority and minority union rights, confirming that while majoritarianism prevails, minority unions retain important organizational and bargaining rights; (4) it establishes that the exercise of statutory powers under section 23(1)(d) to extend collective agreements to non-parties constitutes the exercise of public power, making such extensions subject to legality review even though they are not administrative action under PAJA; (5) it provides guidance on when private actors exercising statutory powers may be subject to public law scrutiny; and (6) it addresses contemporary challenges in labour relations arising from union rivalry and competition. The judgment has important implications for collective bargaining in sectors with multiple unions and provides legal certainty about the scope and limits of extending collective agreements to non-parties.