Unions are prominent stakeholders in employment relations (ER), representing and protecting the rights of their members and other employees on labour-related issues that the workforce is overwhelmed with within the workplace. The purpose of this article was to examine global unionism to advise South African (SA) Information and Communication Technology (ICT) sector labour unionism. It focuses on the recent trends of global literature review to answer five research questions. The rationale is to gain a more theoretical understanding of union roles, the International Labour Organisation (ILO) conventions, global unionism, SA unionism, SA ICT unionism, union challenges and strategies. Globally, unionism drives advancements in socio-economic policies, calling for social dialogue between the tripartite alliances partners in ER: Unions, employers, and the government. However, SA ICT union leaders are weak when negotiating for equity, socio-economic justice, and the advancement of employees in their careers. This research study revealed that union challenges include poor social dialogue, ineffective strategies to sustain membership, inefficient partnerships, and non-collaboration between management and unions. By the results of this study, a strategic framework was proposed for union effectiveness to provide Human Resources (HR), ER and union leaders with a practical management tool. Thus, this study contributes by expanding the body of knowledge on global and SA ICT unionism.