After graduating from the University of Michigan in 1976, Charles joined his family business as a salesman in 1977. After four years with the company, Charles' father named him president of Duro Bag at the age of 27. After his father's death in 1987, 33-year old Shor took the helm at Duro Bag where he was instantly faced with various challenges. In addition to his epilepsy, as well as increased competition from the plastic industry, Duro Bag's lender had also threatened to call the company's loans. However, then-local
Fifth Third Bank eventually agreed to take on Duro's debt. As a result of Duro's innovations in paper bags, the company found itself on the list of
The Cincinnati Enquirer top 100 private companies. Starting in 1988, Duro Bag moved from 7th to 5th to 4th, where it remained a consistent top 10 until 2014. On July 3, 2014, the formal relationship between Shor was effectively dissolved as the sale was finalized. ==Philanthropy==