Some 92,008 foreigners held work permits for professional and skilled occupations in Thailand, reflecting the relative openness of the Thai economy to foreign expertise. More than 80,000 of those were in the two categories of (1) senior officials and managers and (2) professionals. The largest number of foreign skilled and professional workers comes from Japan. Workers from Japan and India are concentrated in the category of senior officials and managers, whereas a majority of those from the Philippines and the United States of America are considered professionals, presumably because many of them are teachers.