Working on any type of mechanical system — especially refrigeration systems — can be hazardous at times. Working safely should always be part of the job, each and every day. Never perform a task that could place yourself or anyone else in an unsafe situation.
There are many reasons why some choose to work unsafely, but a big one is just being lazy. Try to avoid this and always take the extra time needed to work safely. A common example of being lazy is when you set up a ladder to climb onto a roof, and you forget a rope to hoist up your tools and/or parts. Instead of taking the time to go back to your truck and get what you need, you decide to carry them up by hand. Not a wise decision. You could slip or lose your balance and may not be able to recover, resulting in a fall off the ladder. Sometimes the ladder you are using is just a little too short for the location, so you decide to use the top step and stretch to reach the required location — again, not a wise choice.