Due to the many different ways of sub-dividing the middle class, some occupations indicative of the professional middle class might be categorized as upper-middle or lower-middle. Typical occupations for members of the middle class are those identified as being part of "the professions" and often include managerial duties as well, with all being white collar: Accountants, Tenured Professors (Post-secondary educators), Psychologists, Physicians, Engineers, Lawyers, commissioned Military Officers, Architects, Journalists, Mid-level corporate managers, Writers, Economists, Political Scientists, Urban planners, Financial managers, Registered Nurses (RNs), Pharmacists and Analysts.