On the basis of assessment occupational activity is determined of population status (aged 15 and more) on job market. Population aged 15 and more is divided - with respect to economic activity - into the employed, the unemployed and economically inactive population. In case of the Labour Force Survey (LFS), Population and Housing Census 2002 and National Census of Population and Housing 2011, economic activity is assessed on the basis of a situation in a given week.