I am looking to understand the different levels of worker utilization
experienced in different industries - that is, the percent of each
worker's day that is spent doing productive work (vs. eating lunch,
sitting around, waiting for the next assignment, etc.). I am
particularly interested in professional examples, but would like to
see manufacturing and commercial examples as well. FYI, the group that
I am looking to compare to is police detectives/investigators, so any
information on similar jobs or industries would be valued.

A great answer would point me to and/or create a broad list of
industries, or even specific companies, and would indicate the % of
time that workers are productively utilized in each.

I am much more interested in answers that look at productive
utilization as % of a day's work, rather than in terms of worker
output.

Please feel free to reach out with any follow up questions.

I intend to tip generously for a great answer.