[hubtree]

If the stress is overwhelming you, then you should see if there is a solution to remove the stress. If not, then you should probably quit. It isn't worth what stress can do to your health and relationships.

If they need you to do more work beyond your 40 hour week, to the point that they threaten to fire you, then your supervisor likely realizes they need you.

If you find that at 5pm that you are twenty minuets away from finishing something up, then you should consider doing that from time to time, just to show you're on the team.

I am lucky enough to be in a position that I am on salary, but I am still paid overtime if the work load moves beyond 40 hours a week. If I need to work an extra 15 to 30 minutes to finish up what I'm working on, I don't count that as overtime. If I get a ticket that needs addressed, but there isn't time to do it in the normal work day, that counts as overtime.

Maybe consider proposing something similar. If what they really need is a little more help, but don't want to hire a new dev, they may be willing to come up with a compromise.

Good luck.