Global business entities face the challenge of incremental pressures to restructure their strategic alignments and capabilities to be in accordance with the sustainable development initiatives of the United Nations. This study endeavours to investigate the mediating role of employees’ green motivations in the relationships of environmental ethics, the institutional environment, and managerial support with the green behaviour of companies in the Malaysian food manufacturing industry. Data were collected using a questionnaire survey completed by 230 respondents to achieve the study objectives. The respondents consisted of CEOs, company managers, marketing managers, human resources department managers, concerned authorities from environmental protection departments, and producers in the Malaysian food manufacturing industry. The study found that environmental ethics, the institutional environment and managerial support play significant roles in motivating employees’ green activities within organisations, while employees’ green motivation substantially contributes to the green behaviour of the company. This study also revealed that employees’ green motivation plays an important mediating role in the relationships of environmental ethics, the institutional environment, and managerial support with the green behaviour of the company. The implications of this study will be important for allowing governments to take instantaneous action for their climate change pledges to the United Nations Framework Convention on Climate Change (UNFCCC) following the Paris Accord of 2015 and the Marrakech Proclamation of 2016.

Income gap among the Association of Southeast Asian Nations (ASEAN) has widened, while environment degradation has worsened since the 1990s. Using the Gini coefficient as a measure of income inequality, this paper attempts to examine whether the increasing income gap would have adverse effects on environmental sustainability and the causality relationship between income inequality and environmental sustainability. Using data from the World Bank and the Standardized World Income Inequality Database, this paper deployed the Granger causality and panel regression tests to examine these relationships on the ASEAN members of Indonesia, Malaysia, the Philippines, Thailand and Vietnam over the period of 1985–2015. The empirical results indicate that bi-directional causality relationship between income inequality and environmental sustainability exists among the bottom 40%, but the causality relationship results for the overall sample are mixed. The evidence shows that policy-makers in these countries should reduce income inequality to strengthen environmental sustainability.