• James Hardie Industries average operating margin for 2023 was 20.29%, a 8.21% decline from 2022.
• James Hardie Industries average operating margin for 2022 was 18.75%, a 3.6% increase from 2021.
• James Hardie Industries average operating margin for 2021 was 19.45%, a 78.77% decline 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.