NFPA 70E is incorporated into OSHA by reference. In the event of an incident OSHA would typically cite you under the General Duty Clause. i.e. the employer has a responsibility to provide a workplace free from recognized hazards.
There was an initiative to re-write the 1910 and 1926 electrical standards but this has been put on hold and they are focusing on 1926 Sub Part V and 1910.269 High Voltage standards.
