Maintaining trees can come with special hazards, however, according to Indiana Electric Cooperatives. âWe know hiring professionals to do some of these tasks goes against that independent streak some of our consumers have,â said John Gasstrom, CEO of Indiana Electric Cooperatives. âTrimming and removing trees can be dangerous and even deadly. Before attempting any work yourself, please understand the dangers.â The most common types of serious tree trimming accidents are electrocution, falling, being struck or overestimating abilities. Gasstrom warns people can be seriously injured or killed by coming into contact with an electric line. Itâs easy to misjudge the height of a tree or length of a branch, he said. If thereâs a chance power lines might be involved at all, always call your electric utility first and its experts will come out and advise you.