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There is a major lacuna in sustainable human resource management (HRM) research regarding the theoretical context of its adoption or implementation. Consequently, the purpose of this study is to examine the relative influence and interactive effects of different levels of institutional isomorphisms on sustainable HRM adoption.

This study applies the conceptual method and anchors the discussions on the institutional theory and the extant literature on the antecedents of sustainable HRM implementation.

Internal and external institutional isomorphisms will have complementary (synergies) or substitution (trade-offs) effects on sustainable HRM adoption. Furthermore, external institutional isomorphic pressures related to societal values and culture and stakeholders’ sustainability demands are likely to have greater influence on sustainable HRM implementation relative to the internal institutional isomorphic pressures related to managerial sustainability values and attitudes; sustainability-related HRM competencies; resource availability; and perceived sustainability benefits.

This study proposes a novel multi-level conceptual model on the implementation context of sustainable HRM for testing empirically. Furthermore, this study generates insight on how different levels of institutional isomorphic pressures relatively and interactively (synergies versus trade-offs) affect sustainable HRM adoption. This is significant because there is a view that HRM as a discipline is theoretically weak. Although the field has advanced theoretically, one of the areas that need more theorisation is the context of HRM. Hence, this study advances the theoretical context of sustainable HRM implementation through the perspectives of the institutional theory.

While the extant literature has mainly examined either organisational justice or performance appraisal on employee attitudes, studies assessing the effect of performance appraisal justice (PAJ) on employee work attitudes are very limited. Hence, this study aims to investigate the effects of PAJ on employee work attitudes (job satisfaction and employee commitment) using empirical insights from health-care workers in Ghana.

The study collected data from 302 workers in six selected health-care institutions and used multiple regression and bootstrapping mediation methods for the analyses.

This study found that interpersonal and procedural PAJ has significant positive effects on job satisfaction, but distributive PAJ showed an insignificant positive outcome. Then, while distributive and procedural PAJ has significant positive effects on employee commitment, interpersonal PAJ was insignificant. Moreover, job satisfaction significantly mediated the relationship between employee commitment and the three dimensions of PAJ.

This implies that PAJ can trigger positive employee work attitudes such as job satisfaction and commitment to facilitate the realisation of positive health-care outcomes if fairness and justice are effectively integrated into performance appraisal practices in health-care institutions.

The study contributes to extending organisation and human resource theories in the context of health-care services by applying the organisational justice theory to understand the job attitudes of workers in the health-care sector and institutions: a highly under-research context with respect to the topic.