I've been a member of the SCCA since 1984. I've been an active road racing tech inspector since 1992.
Back when I started inspecting race cars, the people with National licenses (the top tier) often signed their own "worker logbooks", which list every event they work during the course of the year. Everyone else got their chief of speciality to sign it. We got away from letting the National license holders sign their own, although a few old guard still tended to do that as recently as a few years ago.
The chiefs of speciality always signed their own books; in fact, just before I chiefed tech at an event for the first time (Bridgehampton regional, September of 1995), I remember Gary Grove, the Divisional Administrator of Scrutineering at the time, telling me explicitly that the policy was that chiefs of specialty signed their own books. This has been true since then.
Well, until now. I was informed by the staff in Topeka (who were very polite about it, they don't specify the policy, they just try to enforce it) that from now on, when I chief tech at a race, I have to find the Chief Steward to get him to sign my book.
I inspect race cars for safety and compliance. Some years, hundreds of race cars have been inspected by me and by tech inspectors under my supervision at the race track. They trust me to do this, but they don't trust me to keep my own worker logbook up correctly. And it's not like they can't double check to see if I'm making stuff up; when I chief at a race, my name is on the supplemental instructions (which must be approved in advance by Topeka) and my name goes in the Observer's report which is sent in after the race.