During the economic boom a tight labour market was experienced, particularly in construction and agriculture. Substantial foreign labour was imported into the casual labour market (Siengthai, 1994). The same situation applied to skilled labour. Attracted by ties and wage differentials (higher minimum wage rates), many unskilled and skilled foreign migrants illegally entered the labour market. This suggests the existence of possible less-than-desirable terms and conditions of employment for these immigrants, as there is a possibility of lesser compliance with labour At the profes- sional level the shortage of university-trained labour with scientific or technological backgrounds has been met by importing engineers and technicians from more developed or neighbouring countries. In some cases internships and apprenticeships are offered to foreign students who have come to Thailand to attend the various international educa- tion programmes which are now available at both undergraduate and graduate levels. Thus, HRM has had to deal with a growing interna- tional and diverse workforce.