I hired a new employee last month. He's very young and totally inexperienced. But, I've never worked with anyone who has a better attitude and is more willing to listen to directions. His perfect work attendance and best attitude make him worth all the time and effort to train him. Last Friday, I told him to take the WB mower to the trailer with the blades disengaged, shut off the engine, and then put a jack stand under the deck and clean the deck. A few minutes later, I walked up to the trailer and heard the mower engine running. He was under the deck trying to put the jack stand in place WHILE THE ENGINE WAS RUNNING. Well, everyone in the neighborhood heard me while I told him how dangerous that was. I thought I shocked and scared him enough that it wouldn't happen again. Today, I was mowing at a property while he was trimming. He was trying to advance the trimmer line manually from the trimmer head when part of the head got away from him and rolled directly towards my mower. I raised the front end of my mower so I wouldn't destroy the part and reached to disengage the blades. Before I could get the blades stopped, my employee reached down under the deck to grab the trimmer head part. I blew a gasket. WHAT THE !@#$%^&* ARE YOU DOING ??!!!!!!!!! I gave him an official verbal warning and I am handing him a typed written warning tomorrow that he will not be allowed another ridiculous, stupid maneuver like that again. If he does something that dangerous again, he will be fired on the spot----for his safety and my sanity. Does anyone else out there have an employee who just doesn't understand what a lawn mowing blade spinning at very high RPM can and will do to the human body when it's where it's not supposed to be ?