Final answer:
A manager acting solely for personal gain without following ethical principles would be unethical and an Ethical Egoist.
Step-by-step explanation:
According to Archie Carroll, if a manager does not adhere to any ethical decision-making principles and acts solely to take personal advantage, he or she would be classified as an unethical individual. This behavior demonstrates a lack of moral responsibility, suggesting that the person is acting as an Ethical Egoist, a term for someone who prioritizes self-interest above all else, without regard for ethical principles. In contrast, ethics require one to be aware of and act consistently with moral principles. There is a clear distinction between mere self-interest (Ethical Egoism) and making decisions based on a universally applicable principle of the Good, which ethical decision-making endorses. In cases where ethical dilemmas arise, it's crucial to have a principle in place, such as the Principle of Utility, to guide actions toward the most moral outcome.