The US Securities and Exchange Commission (SEC) has voted 3-2 to propose a new rule that would require public companies to disclose the ratio of the compensation of its CEO to the median compensation of its employees.

The new rule, required under the Dodd-Frank Act, would not prescribe a specific methodology for companies to use in calculating a ‘pay ratio.’ Instead, companies would have the flexibility to determine the median annual total compensation of its employees in a way that best suits its particular circumstances.

Mary Jo White, chairman of SEC, said: "This proposal would provide companies significant flexibility in complying with the disclosure requirement while still fulfilling the statutory mandate. We are very interested in receiving comments on the proposed approach and the flexibility it affords."

The proposal will have a 60-day public comment period following its publication in the Federal Register.