A profession arises when any trade or occupation transforms itself through "the development of formal qualifications based upon education and examinations, the emergence of regulatory bodies with powers to admit and discipline members, and some degree of monopoly rights."
The process by which a profession arises from a trade or occupation is often termed professionalization and has been described as one, "starting with the establishment of the activity as a full-time occupation, progressing through the establishment of training schools and university links, the formation of a professional organization, and the struggle to gain legal support for exclusion, and culminating with the formation of a formal code of ethicsProfessions tend to be autonomous, which means they have a high degree of control of their own affairs: "professionals are autonomous insofar as they can make independent judgments about their work" This usually means "the freedom to exercise their professional judgement." However, it has other meanings. "Professional autonomy is often described as a claim of professionals that has to serve primarily their own interests...this professional autonomy can only be maintained if members of the profession subject their activities and decisions to a critical evaluation by other members of the profession " The concept of autonomy can therefore be seen to embrace not only judgement, but also self-interest and a continuous process of critical evaluation of ethics and procedures from within the profession itself.