Many jobs are handed down to immigrants.
Maids and housekeepers: 55% native-born
Taxi drivers and chauffeurs: 58% native-born
Butchers and meat processors: 63% native-born
Grounds maintenance workers: 65% native-born
Construction laborers: 65% native-born
Porters, bellhops, and concierges: 71% native-born
Janitors: 75% native-born