Pakistan, Jan. 27 -- Spain left-wing government is set to approve a decree on Tuesday that will regularise the status of an estimated 500,000 undocumented migrants, marking a sharp contrast with increasingly restrictive migration policies elsewhere in Europe.

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Migration Minister Elma Saiz told public broadcaster RTVE that the measure would allow beneficiaries to work "in any sector, in any part of the country", underscoring what she described as the positive economic and social impact of migration.

"We are talking about estimations, probably more or less the figures may be around half a million people," Saiz said, adding that the government was "recognising and...