
Assoc Prof Piriya Pholphirul, who has taught at the National Institute of Development Administration (Nida), pointed out that while the economic benefits of immigration were obvious, its contribution to long-term economic development was still doubtful.
According to a paper presented at the IPS World Bank on Labour Mobility last year, a 10-percentage point increase in employing unskilled immigrants is likely to reduce overall labour productivity by about 5 per cent. Firms in industries that are labour intensive, such as textile production, face more pressure on their productivity.
The paper added that employing unskilled migrants might also blunt a firm’s incentives for innovative investment or cut down on the training of workers. Firms employing cheap labourers from abroad can be regarded as adopting a kind of “labour-using technology”, which could slow down productivity and lead to a deterioration of global competitiveness in the long run.
The paper also found a negative relationship between productivity-enhancing activities such as R&D investments and training of workers and employing unskilled immigrants, particularly for firms located in border provinces. A 10-percentage point increase of employing unskilled migrants tends to reduce a firm’s investment in research and development by around 4 per cent and cut down the probability of training by about 3 per cent.
Piriya expressed concerns because the number of immigrants to Thailand from neighbouring countries has been increasing very rapidly over the past decade.
“They are mostly in the working-age group with low-level skills and little education,” Piriya said.