Cas. Co., 253 Minn, at 106-07, 91 N.W.2d at 126. Section 268.105 specifically provides, however, that, if an appeal is not filed within the 30 days, the ULJ’s decision becomes the final decision of the department. Minn.Stat. § 268.105, subd. 1(c). The 30-day statutory time period is “absolute and unambiguous” and must be strictly construed. Semanko v. Dep’t of Employment Servs., 309 Minn. 425, 430, 244 N.W.2d 663, 666 (1976); see also King v. Univ. of Minn., 387 N.W.2d 675, 677 (Minn.App.1986) (stating that “the time for appeal from decisions of all levels of the [department [of employment and economic development] should be strictly construed”), review denied (Minn. Aug. 13, 1986). When a decision becomes final, the department is deprived of jur r.App. 336, 999 P.2d 503, 506 (2000) (<HOLDING>). Because the 30-day appeal period set forth in
holding that the supreme court has final appellate review of agency decisions holding that the power of any administrative agency to reconsider its final decision exists only where the statutory provisions creating the agency indicate a legislative intent to permit the agency to carry into effect such power holding an agency decision is not final during the time the agency considers a petition for review holding that although administrative agency has inherent power to correct decisions this power is curtailed by statutory language providing specified period of time when agency decision becomes final recognizing inherent power of courts of appeals