overeducation factors and its return in iran

in the recent decade, supply of labour force has increased which may causes theovereducation. overeducation is potentially costly for any economy. in this study,we examine the effective factors on overeducation, undereducation and returns ofyears of schooling, by using the mean realized match method, over iscoclassification data from household socio-economic survey in year 2003 usinglogit,mincer and oru model. we found that in the mincer model returns of everyyears of education is equal to 8.5% and in oru model retuns of required education11.5%, returns of overeducation 9.9% and also retuns of undereducation is -3.55%.