The premium charged for a standard Workers Compensation policy is based primarily on a company's:

The premium charged for a standard Workers' Compensation policy is primarily based on a company's payroll because payroll provides a direct measure of the risk exposure associated with employees' work. Insurance companies consider payroll when calculating premiums because it reflects the total amount that the company pays its employees, which correlates to the overall risk of workplace injuries.

Higher payroll amounts typically indicate more employees or higher wages, both of which increase the potential for workplace accidents and, consequently, the potential costs incurred by the insurer. Underwriters evaluate the industry classification, claim history, and the company's payroll to determine the appropriate premium rate, as different industries present differing levels of risk.

While factors such as net profit, total assets, and employee count may appear relevant, they do not directly reflect the operational risk associated with employee injuries in the same way that payroll does. Thus, payroll serves as the foundational basis for determining the Workers' Compensation premium.