• WESCO average operating margin for 2023 was 6.6%, a 12.82% decline from 2022.
• WESCO average operating margin for 2022 was 5.85%, a 57.68% increase from 2021.
• WESCO average operating margin for 2021 was 3.71%, a 12.42% increase from 2020.

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.