The definition of retirement depends on whether you have reached Normal Retirement Age.
Before Normal Retirement Age
You may not do any work of the type covered by any Operating Engineer collective bargaining agreement no matter where you work or whether the work is actually covered by a collective bargaining agreement in the area where you are working.
After Normal Retirement Age
You may work 39 or fewer hours in a month, but not more than 40, in the “same industry, the same trade or craft and the same geographic area” covered by this Plan. The “same industry” means the business activity of any employer which includes employment that was covered by the Plan when your pension began. The “same trade” or “craft” means an occupation in which you were employed at any time under the plan or one that uses the same skills, and it also means self-employment or supervisory employment related to those same skills. The same “geographic area” means California and Nevada.