Answer:
With freedom comes responsibility.
Step-by-step explanation:
Professionals or even employees who go to training will have to go through that process because it's essential in the workplace for people to have a sense of responsibility and accomplishment working towards their future goals and careers.
For example, IF doctors, nurses, anyone who works at the hospital never went through professional training, then would you be more open in allowing them to operate on you? Most likely no. Without professional training or going through that process, employers won't know who or what type of person to look for and to hire for the job.
You have the freedom to choose what job you want and work hard for it but they would also have the freedom to choose who is able to have that job and what type of person they want in their workspace.