Chris Agee is loading boxes of food and drink products on to a conveyor belt down in the basement of a grocery store in Brooklyn, New York.
One floor above him, shoppers push trolleys up and down the aisles, picking up their weekly groceries.
But this isn't Chris's full-time job. In fact he's not getting paid a wage at all. Chris actually teaches political science at City University of New York.
He is one of the 16,000 members of the Park Slope Food Co-op, who volunteers at the store.
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