According to the US Bureau of Labor Statistics, electric towers and communications towers in developed countries receive annual salaries of up to $ 67,000.
Because of the risks associated with their profession, workers must have certain qualifications as a degree in electrical engineering and undergo special training.
More than 9,900 people work in the United States, and the number is expected to reach 12,000 by 2020.
He had posted a video on YouTube in 2010, and received more than 31 million views, showing one of these workers performing his job climbing a tower height only 538 meters to change the "bulb" at the top of the tower.
The worker shows up as he climbs the tower and carries the bag of heavy electrical equipment without ropes to protect him.
According to some websites, the worker at the tower earns $ 20,000 to change the "bulb" once every six months.