Social planning and econometric models : some comments, following the preparation of the eight plan Bernard Brunhes Three of the six priorities of the VIIlth Plan concern social aspects of development : employment, social protection (social security, health, pensions, family policy, welfare) and housing. Simulations mode with DMS macroeconomic rnodel helped analyse relationships between economic development and social policy. They showed how working time reductions, changes in tax and social contribution rates, investments in housing, etc... could resuit in reducing unemployment. However macroeconomic models do not answer the main issues regarding the development of non market services, the distribution of income, the job market. Among the ...