Background: A growing number of public healthcare organisations are now implementing the lean task board as a qualitative improvement tool to help solve problems and reduce wasteful work tasks. The task board itself helps line managers and employees to manage, collaborate and prioritize as it can present tasks that are upcoming, in progress or finished. With this focus, the presented paper’s research question is: How do managers’ and employees’ use of the lean task board promote learning for improvement in the municipal healthcare sector? Method: Qualitative case study data from a Norwegian municipality including 750 internal self-recorded logs from task board sessions from six different units and 25 semi-structured interviews of managers and employees. The data were organised based on content and recoded by comparing the codes and finding abstract theoretical patterns. Results: The task board works for line managers to make employees responsible for forwarding ideas, solutions and implementation of new actions. Line managers and employees used the task boards to systemise work through establishing new routines and focus on improving tidiness at work. The task boards were also used as a project management system to track progress in purchasing of diverse equipment and initiatives to improve the units’ facilities. Line managers and employees also set professionalism on the agenda, discussing and improving both daily attitude, work environment and user’s well-being. Senior management with a long-term strategy, support for line managers, and allocation of resources was essential to the implementation of the task boards. Conclusion: The implications from the study are that the lean task board is well suited to promote learning processes that tidy up chaos in local healthcare organisations. Drawing upon action learning theory, the study explains the learning challenges of using the lean task board in municipalities’ healthcare systems, as the method promotes finding experience-based solutions that do not involve critical reflection and use of theory. The task board has limitations as a method for improving services between healthcare units and for solving difficult problems. In light of the findings further investigation is still required to elicit how municipalities organize improvement through lean methods.