In 1995, 16 percent of science and engineering doctorates held a second job. This section looks at which doctorates were likely to hold a second job and what those jobs were.
- Doctorates in psychology were most likely to hold a second job (33 percent), followed by doctorates in health and social sciences (21 and 19 percent, respectively) (see Table 30).
- The occupation of the second job was most frequently scientist (44 percent), followed by postsecondary teachers of science or engineering (20 percent). Another 19 percent were in "other" occupations which included such diverse categories as artists/broadcasters/entertainers/writers, farmers/foresters/fishermen, sales and marketing occupations, and service occupations.
- By field, Ph.D.s tended to hold second jobs as scientists (or engineers) in their doctoral field or as postsecondary teachers of science or engineering.
- Ph.D.s whose principal employment was in a private not-for-profit organization were most likely to hold a second job (23 percent), while those in private for-profit companies were least likely to do so (8.9 percent) (see Table 31).
- Sixty-six percent of Ph.D.s holding second jobs said those jobs were closely related to their doctoral degrees. In psychology this proportion was 82 percent. For all science and engineering doctorates with second jobs, 15 percent said the second job was not related to their doctoral degree. The field with the highest proportion saying "not related" was physics/astronomy (37 percent) (see Table 32).
 Holding a second job was defined on the survey as "working for pay (or profit) at a second job (or business), including part-time, evening, or weekend work."