Either include an auto-save option or build a warning that alerts user they are about to be timed out

Users who are interrupted with flow of work sometime lose effort when they go afk for a while (is it 2 hours?), then potentially pick up where they left off only to learn they have lost all their recent work because the system logged them out (time out) already. There is no notification at all... ideally one to warn it will occur soon, and another that says they have been timed out.

I wonder if an auto-save feature would help... perhaps auto-save doesn't change versioning and that's still manually controlled when physically selecting Save.