• Paychex average operating margin for 2011-11-30 was 0%, a 0% decline from 2012-02-29.
• Paychex average operating margin for 2012-02-29 was 0%, a 0% decline from 2012-05-31.
• Paychex average operating margin for 2012-05-31 was 0%, a 0% decline from 2012-08-31.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.