Collins' work emphasizes the practical application of ethical principles within the corporate environment, often utilizing a case-study methodology to explore complex moral dilemmas and decision-making processes faced by businesses. His research and teaching focus on how organizations can integrate ethical considerations into their strategic planning, operations, and stakeholder relationships.
He is the author of several influential textbooks and academic works that are widely used in business ethics curricula globally. Notable publications include Business Ethics: A Case Study Approach, Concepts and Cases in Business Ethics, and Essentials of Business Ethics. Through his writings, Collins has addressed various topics such as corporate governance, ethical leadership, stakeholder theory, and the social impact of business activities, advocating for a balanced approach that considers both financial performance and ethical responsibility. His scholarship has contributed to shaping contemporary understanding and pedagogical practices in the realm of business ethics.