When a worker is asked to sign a non-compete agreement, he is being asked to postpone his future plans in the workplace. Although it is not a prohibition to choose any type of work, an NCA effectively restricts the possibility that a person has to perform in the professional field in which they have skills; if you worked in a company doing a certain task and you sign a non-compete agreement, you will not be able to offer your services to another company that is dedicated to the same field.