Final answer:
An individual who judges the ethics of an action based on its acceptance within a company or industry is a relativist, as this view holds morality to be culturally and contextually dependent.
Step-by-step explanation:
An individual who believes that an action is ethical because it is common practice within his or her company and industry regularly engage in the activity is probably best described as a relativist. This philosophical position holds that moral principles are valid only within the cultural and social contexts they arise from and that no single set of ethics is universally applicable. Relativism is grounded in the belief that actions are morally right or wrong depending on the context and norms of the group partaking in those actions, rather than being guided by absolute or universal standards.