Many lawyers have to religiously time track everything. Because hours attributable to a specific client are billed and billable hours are where the revenue comes from.
"Requires 20 years experience in the Affordable Care Act" - Said no law firm ever
Every field has to deal with change. In law, you've got politicians changing the rules, in the corporate area, you've got Office Politicians changing the rules.
It's not the 6 minutes I heard lawyers do, but I definitely have been asked to track intervals of 15 minutes.