The lead chart is courtesy of the St Louis Fed study on Unemployment Rates by Occupation.

This FRED graph shows the unemployment rates for various occupations. What's striking is that, over the 18-year sample period, the ordering hardly changes. Of course, the magnitude of unemployment responds to what's happening in the overall economy. But management occupations and professionals, for example, always have the lowest unemployment rates by quite a margin. Mining, agriculture, construction, and maintenance have the highest unemployment rates, whether the economy is in a boom or a recession, with manufacturing and other production occupations a close second. These two are particularly affected by recessions. Sales, office, and service occupations fall in the middle.