Transience and settlement: Singapore's foreign labor policy. 
"Foreigners constitute 15 percent of the population and over 20 percent of the labor force in Singapore.... This large foreign labor force is managed by a comprehensive and highly selective foreign labor policy, which is described in this paper.  The strict enforcement of a guestworker policy of transience on the one hand, and the liberal encouragement of settlement on the other, are the twin pillars of this policy.  Seen originally as a dispensable appendage to a labor-scarce economy, foreign labor has now become integral to the economic and increasingly, population policy of the country, as evidenced by the recent announcement of a national policy to ¿attract foreign talent'."