Economist, Policy Research and External Affairs Department, Sector and Project Studies Unit, 1970-1971
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Economist, Policy Research and External Affairs Department, Rural Development Division, 1971-1973
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Economist, Special Financial Operations Unit, Thailand Country Program Team, Rural Development Division, 1973-1974
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Economist, Special Financial Operations Unit, Thailand Country Program Team, Office of the Director, 1974-1975
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Economist, Sector and Operations Policy Department, Economics and Resources Division, 1975
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Senior Economist, Sector and Operations Policy Department, Economics and Resources Division, 1976-1977
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Senior Economist, Special Financial Operations Unit, Thailand Country Program Team, Economics and Policy Division, 1977
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Division Chief, Special Financial Operations Unit, Thailand Country Program Team, Economics and Policy Division, 1978-1984
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Division Chief, Office of Director-General, Operations and Evaluation Department, Agriculture and Human Development Division, 1984-1994
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Division Chief, Performance and Administration Department, Operations Evaluation Unit, 1995-1996.
