Purpose This paper aims to explore the potential relationship between internal corporate social responsibility (CSR) and the decline of organised labour in countries of the global North. Given the opposing trends since the late 20th century and the widespread adherence of internationally recognised labour standards in CSR codes, standards, and reporting frameworks, questions arise about the disparity between CSR rhetoric and practice regarding the collective rights of in-house employees. The paper further explores the tendency in CSR scholarship to overlook violations of collective rights for in-house employees in the global North. Design/methodology/approach To examine whether there is an elective affinity between the rise of CSR and the decline of organised labour, the paper uses a discursive institutionalism approach, providing a meta-theoretical analysis of academic literature on internal CSR. A scoping review methodology was used to identify relevant literature and compile it into an empirical corpus for a metatheoretical analysis. The empirical corpus, consisting of 38 articles, was generated through a Google Scholar (GS) search guided by the following questions: (1) What are the dominant conceptual framings of internal CSR? (2) What are the dominant roles and practical aspects of internal CSR? Findings The paper identifies two key disparities in the literature: (1) between rhetoric and practice regarding the collective rights of in-house employees in the global North and (2) between the extensive CSR research on violations of collective rights of value chain workers and the limited attention to in-house employees’ collective rights. The analysis highlights two factors contributing to these disparities: the integration of internal CSR into the corporate managerial toolbox and the distinction in CSR discourse between core labour standards and workplace issues. The analysis shows that internal CSR has an elective affinity with the decline of organised labour. Research limitations/implications While scoping reviews are often standalone studies, this paper used the methodology for its stated purpose. Limitations include the broad span of internal CSR across various academic fields and reliance solely on GS. Measures taken to enhance inclusivity were unlimited review period, refined inclusion criteria and keywords during the selection process and cross-checks of cited articles. Social implications Considering the implications of the decline of organised labour on workers’ collective voice, poverty and the distribution gap in wealth and income, this paper suggests that for CSR to play a significant role in advancing sustainable social justice, scholars and practitioners should look at ways to reduce the disparity between rhetoric and practice regarding employees’ voice and collective rights. Originality/value The paper lays the foundation for a better understanding of the potential links between internal CSR and the decline of organised labour. It addresses a gap in the literature on the interrelations between CSR and organised labour in the global North and proposes root causes of this gap. This contribution enriches the scarce literature exploring the potential elective affinity between CSR and transformations in the global economy and labour markets since the late 1980s. Finally, the paper deepens the understanding of the implications of CSR for employees’ collective rights and voice as well as for organised labour.