If in any case it appears to the commission, the successor to the commission, other private insurance carriers and self-insured employers, whichever is applicable, that the application filed pursuant to section four of this article fails to disclose some fact or facts which were not previously considered by the commission in its former findings, and which would entitle the employer to any modification of the previous award, the commission, the successor to the commission, other private insurance carriers and self-insured employers, whichever is applicable, shall, within sixty days from the receipt of the application, notify the claimant and employer that the application fails to establish a just cause for modification of the award. The notice shall be in writing stating the reasons for denial and the time allowed for objection to the decision of the commission, the successor to the commission, other private insurance carriers and self-insured employers, whichever is applicable. The employer may, within thirty days after receipt of the notice, object in writing to the decision. Unless the objection is filed within the thirty-day period, no objection shall be allowed. This time limitation is a condition of the right to objection and hence jurisdictional. Upon receipt of the objection, the office of judges shall afford the employer an evidentiary hearing as provided in section nine of this article.