Farmhands best practice

A farmer being attended to by a junior doctor at a casualty department for a broken wrist was asked the standard question "How did you get the injury." He replied that he would tell the truth but you are not going to believe it.
 
 Finishing some work in the cow shed he walked back over the yard towards his house when he noticed a stone in his boot. Just as he bent down to get the stone out, it started to rain heavily. He hopped into the nearest doorway and continued to shake his foot to move the stone.
 
 A farmhand walking into the yard sees him with one hand resting on the electrical terminal box twitching his leg like a mad man. It looked like his boss was being electrocuted so he grabbed a lump of wood and following best safety practices "Broke contact" by whacking the farmers hand away from the electrical source.
 
 His next job was to drive his boss to the hospital.