Second, there are also large differences among the studies in the relative weights attached
to growth in the capital and labor inputs. Because a small proportion of employed persons in
Thailand are classified as employees, the labor share of value added is quite low in the official
national accounts. Thus, most of the weight in a growth accounting exercise, where output
growth is computed as a weighted average of the growth in the factor inputs, is attached to the
fast-growing capital input, resulting in a small residual estimate of TFP. Several of the studies
adjust the factor shares by imputing a wage to the self-employed (employers, own account and
unpaid family members) that results in the reallocation of a large amount income from capital to
labor income. Since the growth of the labor input is less than that of capital, the result is a larger
residual estimate of TFP.