Ol) Legislators, senior officials and managers, (02) Professionals, (03) Technicians and associate professionals, (04) Clerks, (05) Service workers and shop and market sales workers, (06) Skilled agricultural and fishery workers, (07) Craft and related trades workers, (08) Plant and machine operators and assemblers, (09) Elementary occupations. International immigration benefits immigrants in Thailand, but it is also of importance to the Thai economy as it ensures a supply of young workers in the face of an ageing native-bom population. For example, occupational distributions of native- and foreign-bom workers are very different, and these differences became more pronounced between 2000 and 2010. Educational attainment has been improving for both the Thai-bom and the foreign-bom populations, and foreign-bom workers have increasingly moved out of subsistence agriculture and into industrial sectors, thus contributing to the diversification and growth of Thailand’s economy.