I am tempted to put "is in the public interest", but that may be going too far: the interest may simply be that of an institution, for example. But "interés" is the key word here: "razones de interés económico (etc.)" means that these are people who possess a professional expertise that makes their presence beneficial because it serves some interest. I think the following similar passage from the Ministerio de Trabajo website helps to make the sense clearer:

"La Unidad de Grandes Empresas es responsable de la gestión de las autorizaciones de residencia, residencia temporal y trabajo por cuenta ajena y residencia temporal y trabajo en el marco de una prestación transnacional de servicios, que se solicitan a favor de directivos y técnicos de alta cualificación, técnicos y científicos, profesores de universidades públicas españoles y artistas de reconocido prestigio internacional, en cuya contratación concurran razones de interés económico, social, laboral o cultural."
http://extranjeros.mtin.es/es/UnidadGrandesEmpresas/

It's talking about importing talent: people that firms want to hire because there are "razones de interés económico (etc.)" for doing so.


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Note added at 1 hr (2011-05-26 11:23:54 GMT)
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By the way, I have found the following translation of this phrase in a Spanish website:
"foreigners whose professional activity involves matters of economic, social or labor interest"
http://www.euraxess.es/eng/services/practical-guide

This gets the sense, I think, though for me "economic, social or labor interest" doesn't quite work as a phrase.