Aside from manufacturing, which makes up most of the workforce, it has finance, legal, IT, order processing, transport and logistics, warehouse and distribution departments which were not affected by the initial announcement.

BBC: Workers march over factory threat

Logistics company Shibusawa Warehouse Co.

WSJ: Japan Corporate Bond Issuance Jumps to 3-Year High

The students work for a warehouse run by Exel, a logistics company hired by Hershey.

FORBES: Hershey Fudges Labor Relations Image

David Walker, senior vice president of logistics, says that electronic monitoring of items from point of origin to the warehouse could boost the chain's operating margin from 11.5% to 12.5%.

FORBES: The logistics of a dinner plate