Working and going to school at the same time… The teaching-learning process for adult people has some features that distinguish it from other educational levels. The main characteristic is related to the possibility to combine study and work as the key to success by obtaining a significant learning experience. For many people, the opportunity to improve their professional or academic development in order to reach high standards of their working life, it’s becomes a real necessity. By the way, when you are studying with this preliminary purpose, many results are expected by your managers as well. In this respect, there are scientific researches that have demonstrated the mutually beneficial relationship between professional development and business intelligent. On the other hand, the mentioned work-study combination has been criticized by opponents of this modality of study. The lack of time; the individual high effort and the incomprehension of several managers; there are few of some contrasting viewpoints expressed by its detractors. Even though the truth of above mentioned arguments; the well recognized advantages of adult education to achieve a professional development, come true the fact to learn by doing from our own workplace environment. To contribute to learning quality of this process, many organizational forms, approaches, informatics technologies and different modalities have been implemented on the concept of “Learning without Frontiers” or open learning systems. To cite just a few examples, we can mention: distance learning education; semi-attendance courses (blended learning); encounter courses; self-learning; platforms or virtual learning spaces, etc. Working and going to school at the same time is serious option to consider for ensuring a professional development by a significant learning experience.