Occupation
An occupation is defined as the work activities a person practices. Or, if he/she has more than one job, the job (work, profession) most frequently practised. This question does not concern one’s educational background. A respondent can be a graduated anthropologist but if she works as a secretary; then her profession is a secretary.
A respondent can have two jobs, in this case she can work as a secretary and a teacher resp. 10 hours a week and 30 hours a week. Her occupation then is a teacher.