AS 23.30.160 prohibits commutations of compensation or benefits except as provided in the worker's compensation act. PPI benefits can be paid as a lump sum in some circumstances under AS 23.30.190(a), and AS 23.30.215(d) permits commutation of an award payable to an alien dependent. 40 . For this same reason, Seybert's claim that the settlement was presumptively unreasonable under former 8 AAC 45.160(e) has no merit. 8 AAC 45.160(e) provided that lump-sum settlements of board-ordered PTD claims were presumed unreasonable. There was never a board-ordered PTD claim in Seybert's case. 41 . Indus. Commercial Elec., Inc. v. McLees, 101 P.3d 593 (Alaska 2004). 42 . Williams v. Abood, 53 P.3d 134, 139 (Alaska 2002). 43 . See Walton v. Ramos Aasand & Co., 963 P.2d 1042, 1045 (Alaska 1998) (<HOLDING>); Olsen Logging Co. v. Lawson, 856 P.2d 1155,
holding that property settlement agreements may be specifically enforced holding that basic contractlaw principles of contract formation apply to settlement agreements holding mutuality of obligation is essential to the formation of a bilateral contract holding that the rules of contract law are applicable to plea agreements holding that immunity agreements are analogous to plea agreements and are enforced under principles of contract law within the constitutional safeguards of due process