Widening the qualification (postgraduate courses) is a continuation of training received in high schools and/or colleges. It is the process of adapting the knowledge and skills of the changing requirements of the current job (change of technique and technology, new discoveries in the field, new market requirements, etc.). Reskilling (retraining) is the formation of professional skills that lead to getting used to the new job, new skills. It may be a partial or complete retraining. Adaptation is the orientation of a new employee on the job and working team. Professional (vocational) training helps employees mainly in carrying out their current job, although its benefits extend employee’s career well into the future. Professional development helps employees cope with not only the current but also the future obligations regardless of the current job