If the application contains an allowable good cause but otherwise is insufficient or incomplete in other respects, the employer has 15 days after the date of the Director's notice of application deficiency within which to file an amended application based on the same ground. If an amended application for waiver has been timely filed, an employer may file additional information to be considered as part of its amended application within 30 days after the period for filing an amended application for waiver has ended.
Ill. Admin. Code tit. 56, § 2765.85