Although firms increasingly publish sustainability reports, assuring such reports is relatively new. This study reviews the literature of sustainability assurance to evaluate the intellectual development of the field and provide recommendations for future studies. It also demonstrates the role of assurance to enhance the credibility of sustainability reports and corporate reputation. This paper systematically reviews 94 papers obtained from the Scopus database between 1993 and August 2021. Our study shows that there is an increase in the number of studies published in recent years. We also found that some countries have received limited attention, such as the USA. The scant literature examining sustainability assurance in private institutions and non-profit organisations should be reinforced. Likewise, the sustainability research also provides limited evidence on the governance debate. The vast majority of research is not based on theoretical grounds. The need for assurance of sustainability reports not only enhances the reputation but also adds more value to the organisation’s planning, monitoring, and accountability. We highlight several new research suggestions that may enhance the understanding of sustainability assurance practices.

Purpose: This study aims to provide a comprehensive review of the existing literature on corporate governance (CG) aspects of the Malaysian market. It offers insights into the phases of Malaysian CG, identifies crucial gaps in the literature and outlines an agenda for impending research.Design/methodology/approach: Following a systematic literature review approach, a final sample of 125 studies from Scopus and Web of Science databases was used in this study. These studies were selected based on quality assessment criteria. Then, the sample literature was evaluated in terms of journals, methodology, theories, modelling, research outcomes and CG characteristics.Findings: The results show that there is a growing interest among researchers to further explore CG aspects in Malaysia due to the continuous development of the Malaysian CG codes. Likewise, the review reveals that the majority of prior studies are quantitative and were carried out using archived data from non-financial firms. Also, the existing literature has primarily focused on the outcomes of CG, especially firm performance.Research limitations/implications: Overall, the results show that there is ample room for future research. The present paper identifies a number of methodological problems and concerns, and discusses the implications of these problems, while also providing recommendations for future research. The main caveat is that the authors use scholarly papers published in academic journals only, but this approach offers them with opportunities for considerable further developments.Originality/value: To the best of the authors’ knowledge, this study contributes to the literature by being the first of its kind to concentrate on the Malaysian context. It provides a comprehensive knowledge assessment of the Malaysian CG research and offers advice regarding improvements in research, policy and practice by identifying possible knowledge gaps. Consequently, this study provides a cohesive story of the past and a road map for future research on Malaysian CG.

In recent years, discussions on green purchasing have increased; most studies were concentrated in developed countries, with limited studies conducted in developing countries. This study aims to systematically analyze studies that have discussed green purchasing. Using the Scopus database, 142 studies from 61 journals published during the period 1998 to 2021 were analyzed. Our analysis focused on three fundamental aspects: the determinants, the effect of green purchasing, and exploring the theoretical foundations and the most common theories that the studies relied on. The analysis results focused on researchers’ demographic and physiological determinants based on the theory of planned behavior. There has been a development in discussing the determinants related to products and marketing and social and environmental determinants in recent years. The analysis results of the studies that addressed green purchasing show that green purchasing contributes to sustainable development. This study contributes to decision-makers by identifying the mechanisms of persuasion that motivate consumers to buy green products and provides a clear picture of the contribution of green purchasing to improving company performance and thus achieving sustainability, which encourages stakeholders to devise policies, promotional, and marketing strategies through which they can attract consumers.

Purpose: In recent years, mandatory rules and regulations were issued to stress the importance of increasing gender diversity in companies, assuming that gender diversity would enhance financial performance. Thus, the purpose of this paper is to review recent research concerning board gender diversity and its impact on financial performance for the period of 2002 to 2022. Design/methodology/approach: Using the Web of Science and Scopus databases, 152 studies were analyzed, out of 91 high-impact journals. The analysis focuses on discussing the moderating, mediating and controlling variables and exploring the theories and theoretical foundations that are most prevalent in the literature. Findings: The findings indicated an incompatibility between the results of the studies on the impact of gender diversity on financial performance. In addition, results showed the majority of studies focused on discussing the controlling variables associated with the company compared to the variables related to employees or the surrounding environment. On the other hand, the results also showed widespread use of the theoretical basis with the development of new theories in the recent period in parallel with the increase in the literature. Originality/value: The results of this study help to reconcile the findings of the different and conflicting literature by presenting the perception that the efficacy of the positive impact of gender diversity on financial performance is related to several organizational and environmental factors that companies have to consider.

The purpose of this study is to review the field of internal audit (IA) in the Chinese context and provide insights into how the literature of IA has evolved by clarifying criticism of the research published until 2020. Following the structured literature review (SLR) technique, forty-seven (47) studies were identified from two databases. The results show that the IA literature did not contribute significantly to the knowledge of IA functions in the form specified by the Institute of Internal Auditors. The study also revealed that there is more to be explored so as to fully understand the IA aspects and their impact on Chinese institutions. Descriptive research was prevalent, depending on the review of the traditional literature and the historical analysis. On the other hand, the results show that the interpretative research that relied on the case study, questionnaire, and interviews were scarce. The private sector has been little studied compared to that of the public sector. This study highlighted the real IA’s practice and identified literature gaps related to the Chinese context. This study is the first comprehensive review that analyse IA research in China. It also contributes to the literature by providing a road map for future studies by interested researchers and academicians, including the Institute of Internal Auditors.