17. In respect of any person aged 16 years or over but under 75 years on census day, for the main job he was doing during the week preceding census day, or if not working during that week, for his last main job—
(a)whether he worked as an employee, or was self-employed with employees or was self-employed or freelance without employees;
(b)how many people worked for his employer at the place where he worked or, if self-employed, how many people he employed;
(c)what was the full title of his main job;
(d)what he did in his main job;
(e)whether or not he supervised any other employees; and
(f)what was the business of his employer at the place where he worked or, if he was self-employed or freelance or had his own business, what was the nature of that business.