Enhancing sustainable competitive advantage in terms of quality service delivery is key for environmental sustainability. Most organizations are bedeviled with toxic behavior of the workforce which have unpredictable concerns for sustainable initiatives parameters such as decline in profits, environmental degradation, and health deterioration. This chapter utilized the ability, motivation and opportunity theory, and relevant literature to examine the influence of workplace green behavior on sustainable competitive advantage, and the implication for environmental sustainability. The conclusion revealed that workplace green behavior in form waste recycling, going paperless, and embracing renewable energy predicted sustainable competitive advantage in terms of producing green products and services. The study recommended initiation of green organizational culture and creativity as panacea for green behavioral responses and sustainable goals.