Almost every organization is concerned with the retention of one of their largest assets: Knowledge. So many of them struggle in the process of increasing the shared level of knowledge and still many of them have to conclude that people leave their organization leaving considerable knowledge gaps. In this presentation we show you a proces for capturing and distribution of critical, experience driven knowledge; that knowledge that can only be obtained by doing the work. Our button-up approach has been successful in many organizations, leading to an efficient way of increasing the shared knowledge level. But maybe even more important: an increased awareness among employees towards their work and the quality aspects of it. We are happy to see that our clients are still working according our process and are in fact increasing the number of knowledge domains they would like to be included in this learning method. The online learning environment that is offered to employees to facilitate their learning of this critical, experienced based knowledge is no being used by more than 10000 users.