An employer affected by a standard can ask the Secretary, by rule or order, for a permanent variance from a standard. Affected employees must be notified of the application and given a chance to take part in a hearing. The Secretary grants the variance on finding, by a preponderance of evidence after any inspection and the hearing, that the employer's own methods, practices, operations, processes and conditions give employees a place of employment as safe and healthful as the standard would; the order states the conditions the employer must keep and may be modified or revoked on application or on the Secretary's own motion after six months.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.