This article contributes to knowledge about learning in workgroups, so called "microcultures" in higher education. It argues that socially constructed and institutionalised traditions, recurrent practices, and tacit assumptions in the various microcultures influence academic teachers towards certain behaviour. In line with this perspective, we present a heuristic with the potential to differentiate various types of microcultures: the commons, the market, the club, and the square. The heuristic is based on a socio-cultural perspective and research on collective action. Its purpose is to assist academic developers to fine-tune their approaches while engaging with colleagues, but also to aid further inquiry into how institutionalised norms and traditions influence academic teaching and student learning.