[Marcus Marulus]

Because of the different type of economy (still to a certain extent "unglobalized" back then), Communist countries didn't neither need nor invite guest workers.

There were rare exceptions, which, however, bear scarce resemblance to the Western European model of the guest worker. At the end of the Communist empire there was (in the 80ies) the phenomenon of Vietnamese guest workers. They were sent forcibly by their government to work in different eatsern European countries, their wage was only food and housing. It was the way for the Vietnamese government to repay its foreign debts to the countries of the eastern block.

On the other hand, as Aptrgangr already stated, Communist countries were nationalist in certain sense. Maybe that also prevented immigration. And due toi difficult economic conditions in the eastern block, few even wanted to emigrate there.

And another thing: blaming only commies for immigration into western Europe is plainly ridiculous. Because immigrants came to different European countries while all kinds of governments were in charge: liberal, conservative, social democrat, socialist, christian democrats, christian socialists...

Communists were nowhere in charge in Western Europe in the post-war period. Yes, they also supported immigration out of their internationalist conviction, but were never and nowhere powerful enough to force their will upon whole countries.