Temporary work agencies and migrant workers : for a flexible and cheap labor force

Summarize :

We estimate that at least a 50% of labor force in the netherland is provided from temporary work agencies, majority of the workers come from Poland. Apparently it seems that there is very few labor violations, but in order to make benefits offering the cheapest prices, agencies charge lot of servicies to the workers, who are in a dependant situation since they left Poland.