The paper presents an action research on co-designing employee-driven service development instruments for public health care professionals. The empirical study examines how the methods and tools co-designed for service development with the workers could support employee-driven innovation initiatives in health care organizations, and strengthen the approach and emphasis on the discovery of unmet human needs in service development. Particularly, the research findings focus on how the co-designed instruments overcome the identified barriers for engaging health care professionals in employee-driven innovation processes.