A profession involves a skill based on theoretical knowledge. Professional skills require extensive and intensive training and education. The professional must demonstrate competence by passing a test. The profession is organized and it is represented by an association of distinctive character.
Integrity is maintained by adherence to a code of conduct.
Professional service is altruistic. The professional assumes responsibility for the affairs of others. Professional service is indispensable for the public good. Professionals are licensed, so their work is sanctioned by the community. Professionals are independent practitioners, serving individual clients.