Singapore usually doesn't grant permanent residency to the manual workers from abroad.
They issue that residency only to those with high income and academic background.
In case of female laborers, there is a mandatory 3 monthly pregnancy test.
When found positive, they are immediately ordered to leave SGP.
The same applies when foreign migrant workers stay jobless for a couple of months(male or female).
And any workers(whether own national or aliens) can be fired on the spot without any advance notice.
One friend of mine(web designer) experienced it in the past.
He used to work for It firm run by the westerner.
But suddenly lost that job when the company owner decided to close his business.
That's what I heard of by now.
Any Singaporean labor issue expert, Please comment.