"The crackdown is meant for those foreign visitors who abuse the visa exemption scheme for working illegally in Thailand," according to a recent explanation issued by the Thai Embassy in Canberra, Australia.
The warnings issued in July to foreigners who have overstayed by more than 90 days, states they would be banned from Thailand for between one and ten years, although no start date has been announced. From August 12, visitors arriving at Thai airports may be denied entry if immigration officers suspect they are living in the country on short-term visas, according to another notice.