LesserAbeFor the thing you're in charge of, what does it take to do a good job?
Document every single thing that causes you to change your work plan and who is responsible for said change. Getting the job done is secondary to making sure anything you do can be billed to someone, and you better not do anything that helps the job get done if you can’t bill for it.
Construction is fun.
If you had to estimate, what is the breakdown between time spent working and time spent documenting billable activity?
Depends how much fuckery is going on. If other trades are lying about their progress (which happens a lot) then sometimes the whole day is spent documenting instead of working. If everything goes smoothly though it’s probably 5-10 minutes of documenting per hour of work.