The Fiscal Policy Institute has released a new report called "Contribution of Immigrant Workers to the Country's 25 Largest Metropolitan Areas"; it was sponsored by the Carnegie Corporation and a Service Employees International Union local and you can get the PDF at fiscalpolicy.org/immigration.html. They say:
In November 2007, the Fiscal Policy Institute offered the report "Working for a Better Life/A Profile of Immigrants in the New York State Economy" (fiscalpolicy.org/immigration.html) which was co-produced with the New York Immigration Coalition.