 About 70% of them have paid work, in catering, construction, retail, driving, cleaning, and many other trades; at least in catering, their wages tend to be lower than those of comparable workers.City regulations restrict public officials and police officers from enquiring about immigration status of residents with whom they come into contact.According to a study by the Fiscal Policy Institute, about 4.08 million immigrants lived in New York State in 2007, and according to the Migration Policy Institute, about 4.47 million immigrants lived in the state in 2014.