The difference compared to national estimates from Canada, France, and the United Kingdom is probably attributable to lower levels of direct service intervention (i.e. mental health service provision) in other countries, which are likely to further inflate indirect costs of mental ill health. Cross-sectoral co-operation in service delivery is a key aspect to effectively and efficiently supporting individuals with complex needs (OECD, 2012b, OECD, 2014) - though challenges exist. This section discusses recent developments in mental health care towards an integrated community care approach in the general population, and highlights the need for a multisectoral approach in addressing these individuals’ complex needs. Mental health is currently a policy priority in several OECD countries: as shown in Table 3.1, 27 OECD countries have ongoing, national-level strategies or policies for mental health in the general population.