• HITACHI CONSTR average operating margin for 2016-09-30 was 0%, a 0% decline from 2016-12-31.
• HITACHI CONSTR average operating margin for 2016-12-31 was 0%, a 0% decline from 2017-03-31.
• HITACHI CONSTR average operating margin for 2017-03-31 was 0%, a 0% decline from 2017-06-30.

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.