We are a non-profit, and several years ago, a former board promoted a current employee to a manager position. In the notice of promotion letter to the employee, it states the new salary level and a statement that we would provide insurance coverage for the employee and dependents. We have decided to discontinue group coverage (as we only had two employees covered), and the manager is maintaining that because the letter received four years ago includes insurance coverage, we are required to maintain the same coverage. Are we? State law in Oregon states that small businesses are not required to provide insurance.