You could check in with somebody by phone. "Im going to work in the fruit trees out back on a ladder. I'll call you when I'm done. If you don't hear from me in 2 hours, something's wrong. Call me, and come check on me if you can't get through. " then call and set a new time when you go in for a bathroom break or for some water.
That way you can work but you don't have to lay out there with a broken whatever for more than an hour or 2.
I do this when i go walk in the woods, or when i get cut and feel faint and like i might throw up, etc. I just say, "hey, mom. I'm in the kitchen at home. I cut my hand and feel gross so call me in 10 minutes and make sure i'm ok. I think it's ok." And then in 5 minutes, the cut's taken care of and i feel ok and i call her.