	Berlin was the chairman and chief executive officer of Berlin Packaging, a global supplier of plastic, glass and metal containers and closures with 2017 sales in excess of $1.3 billion and a valuation of $2.6 billion. In October 2014, the company was valued at $1.4 billion. His management of Berlin Packaging has been used as a case study in "The Human Equation" by Jeffrey Pfeffer.