This study explores which work practice and learning worker characteristics relate to different kinds of informal learning. Informal learning is viewed as an integrated process consisting of an interaction process between learning workers and interaction partners and an internal psychological process, leading to an outcome. A sample of 279 police officers filled out a questionnaire. Preliminary analysis shows that external input, collegial availability, valuing informal learning, police tenure and hours spent on jobs besides police work predict informal learning. [For complete proceedings, see ED491481.]