I worked for a company 2 decades ago where the most senior developer had his password on a post-it on his screen (this was after mandatory rotation was enforced) because his workstation had all the build environments for all the software in the company properly configured. To save time, if there was an issue with software in the field while he was off or traveling, a colleague or the service team could just walk into his office, fix the issue in the code, release a new binary and send it to the customer.

It was concurrently the most practical solution to customer support and the biggest security nightmare i've encountered.