Do workers read policy changes? Collect proof the right way

Suppose your organization decides to alter its retirement plan. You shoot out an e-mail about the change, but fail to secure written proof that employees have read and understand the modifications. Three months later, an employee retires based on promises made in the old retirement plan, resulting in lost pension dollars. He sues, saying he never got wind of the retirement-plan change. This true story occurs surprisingly often in U.S. workplaces ...