Combating the Illegal Employment of Foreign Workers The fight against the illegal entry residence and employment of foreigners is one of the key priorities of the immigration policies of the OECD countries. This irregular migration continues to persist albeit at different levels for different receiving countries both in countries that have expressed a political will to manage migration flows more effectively and to fight against the trafficking of labour and in those that continue to receive a large number of immigrants every year as part of an active policy to recruit permanent migrant workers. In the light of the growing role of trafficki