Food depository officials say there is a 35-percent increase in requests for food from individuals, including the recently unemployed.
Quinn is calling on those in a position to help to try and do more.
"I think it's very important to point out that many working families find, at the end of the month, that given the high cost of utilities and gasoline and healthcare, and given the fact that some folks are losing their jobs or having their hours reduced, they find themselves without enough to eat," Quinn said.
The Greater Chicago Food Depository supplies 600 member soup kitchens, food pantries and shelters across the area, serving some 500,000 adults and children each year.