The following questions (17-20) refer to the person's occupation during the previous week (7-13 March 1971), regardless of whether or not the person usually works.
If he/she worked during the previous week (questions 17-19):
___ _ _ _ 18. a) What type of work was he/she doing?
Questions 18, Type of work and establishment of work [omitted]
Question 19, Occupational status [omitted]
Question 20, Reason for not working [omitted]