Ind. Code § 22-8-1.1-20.1
Any affected employer may apply to the commission for a permanent variance from a standard promulgated under this chapter. Affected employees shall be given notice of each such application by posting it at or near the location for which the variance is sought, and an opportunity to participate in a hearing. The commission shall issue such rule or order if it determines, after a hearing, including an inspection, if appropriate, that the proponent of the variance has demonstrated by a preponderance of the evidence that the conditions, practices, means, methods, operations, or processes used or proposed to be used by the employer will provide employment and places of employment to his employees which are as safe and healthful as those which would prevail if he complied with the standard. The rule or order so issued shall prescribe the conditions the employer must maintain, and the practices, means, methods, operations, and processes which he must adopt and utilize to the extent they differ from the standard in question. Such a rule or order may be modified or revoked upon application by an employer, employees, the commissioner of labor, or the commission on its own motion, in the manner prescribed for its issuance under this section at any time after six (6) months from its issuance, provided that the moving party gives thirty (30) days notice to the other parties, and a hearing is held at the request of any of the parties.
IC 22-8-1.1-20.1