Gaps in current knowledge To strengthen current knowledge, particularly on effectiveness, cost/benefit analysis and the impact on health of WHP programmes, further research is needed. The development of simple and easy-to-use validated instruments for diet and physical activity evaluation is encouraged. There needs to be further exploration of how the evidence- based diet and physical activity interventions are applied in workplaces that are in different geographic locations, and that vary in terms of governmental structure, literacy levels and social norms around different health behaviours. Identifying and publishing case reports and examples of international WHP programmes can also constitute supportive information that will help planners better understand how to develop global programmes. .
