• Arthur J Gallagher average operating margin for 2023 was 17.07%, a 2.79% decline from 2022.
• Arthur J Gallagher average operating margin for 2022 was 17.56%, a 15.91% decline from 2021.
• Arthur J Gallagher average operating margin for 2021 was 15.15%, a 10.42% 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.