new component of the labour supply (constituteal bY the children of migrant workers) bhac must be integrateal into the mainstrean of economic activity in order to ensure a healthy symbiosis betlteen it and the national population as a whole ' 234. h Vlestern Asia anal Northern Africa, the inflot of migrant workers contlnues' In certaln ieceivlng countries, the foreign Population alrea'ly constitutes a very sizeable proportion of the total population i'n the country' :g/ Given.the existing imbalance between resources, the size of the native labour force and its alistribution with regard to skills, foreign labour ls necessary to fuel and maintain an ambitious tleveloPmenE proqramme that nould not be possible in its absence. Yet, appreciating that the long-terR presence of foreigners in thelr territbries may bring about undesirable social and economic chanqes, receiving states have vigorousl"y pursued measures to ensure the rotation of forelgn labour: migranls are alloeed to enter and stay in the receivinq country only when their labour is needed, thelr family mernlcers are generally not allowed to accompany them and upon completion of their task migrant workerE are exPected to leave the country. ly In this sense, receiving countries have been successful in maintafnl;A the flexible character of the foreign labour suPply' The short-term consequences of such a strategy appear to be posltive on balance, but its lgng-term con"e!uerr"." may not be equally encouraging, especially with respect to the national labour supPry. ittaeea, the reiatlvely privileged positlon enjoyed by nationals makesi it unlikelt that they may be eager to take over the tasks being performed by foreigners. 5/ tt"rr"", the enhancement of the national I'abour supply in terms of skills antl th-e promotion of incentives to facilitate its replacing foreign labour are among lhe tasks still facinq the receiving StaEes' 235. Regartllng the senaling countries, their posltion nith respect to international
**Analysis**
The text discusses the integration of a new component of the labour supply, constituted by the children of migrant workers, into the main stream of economic activity. It highlights the importance of foreign labour in fuelling and maintaining an ambitious development program, but also mentions the challenges of ensuring the rotation of foreign labour and the potential long-term consequences on the national labour supply. The text focuses on the relationship between the foreign labour supply and the national population, as well as the policies and strategies implemented by receiving countries to manage this relationship.

**Category**
Employment, International trade