That's a tough conclusion to a day at work for a pro. It seems that most injuries are a result of us trying to take a shortcut to save time or more work.
My fall was in 1994 and was entirely my fault. We were trimming the end 16' from a 30' oak limb that was horizontal and about 18 feet from the ground. I used our 24' ladder and ran it 3' above the limb, figuring that to be OK. This too was just before lunch and I went up the ladder with the saw and did not tie myself off. Ralphy was pulling a utility rope down and to the side to let the branch clear the ladder. That fact probably made things worse.
When I cut the limb, the balance of the limb reacted upwards about 4', and I knew immediately that I was fubarred.
I landed flat on my back, having bounced of the ladder and limb, the saw landed beside me Stihl running. I lay still for about 5 minutes telling myself I'll be OK, just wait, and also how stupid I was. I was able to get up, felt crappy and I had a shin rash right to the bone and sore all over. Ralphy packed up and I went home to bed. In hindsight (?), I should have gone to emergency for a check. The next day, I was sore and I firmed up my new, no excuses, safety policy.