“Over the past 10 years, there have probably been no more than a handful of incidents of people slipping or falling on the stairs,” he said.

Mr Jeffes said staff would review the lighting after the accident. Because Ms Zampatti lost consciousness, the company also contacted Safework Australia, which had now cleared the site for the Saturday evening performance.

He also said Opera Australia made contact with Ms Zampatti’s team on Saturday to make sure she was all right.