The equalities regulator has named and shamed 47 organisations that have missed deadlines to report their gender pay gap.
The Equality and Human Rights Commission said it had notified the organisations that it will start formal investigations and assessments to determine if they are breaking the law.
If this is the case, they will be required to publish the figures immediately and organisations that do not co-operate could face legal action.
Rebecca Hilsenrath, the commission’s chief executive, said: “Transparency is a vital first step if we are to achieve gender equality in the workplace.
“All employers with 250 or more employees are legally required to publish their gender pay gap where everyone can see it. There’s no excuse for missing the deadline and we will be making sure that all employers that haven’t published their figures are held to account.”
The deadline for organisations with 250 or more workers to publish their gender pay gap was March 30 for public sector employers and April 4 for private and voluntary sector employers.
More than 10,700 organisations have reported their gender pay gaps for this year.