employee’s permanent disability as determined by a doctor. Thus an employer has knowledge of the injury resulting in the PPI not later than receipt of the PPI rating. The PPI rating, such as that in Dr. Tanner’s letter which stated that Hammer had a thirteen percent permanent impairment of the whole person, represents the residual injury to the employee. Unless the employer is unsatisfied with the rating or is suspicious of the injury and chooses to controvert the rating, the payment “becomes due” within fourteen days after the submission of the rating. Thus, construing AS 23.30.155(b) and (e) together, unless the employer files a controversion, the employer has twenty-one days after receiving the PPI rating to pay or be subject to the statutory penalty.- See Sumner, 894 P.2d at 631 (<HOLDING>). 2. The Board’s application of AS 23.30.155 to
holding that a complaint that a report was not timely served was not subject to the twentyone day deadline to object to the sufficiency of a report under former section 74351a holding that parental right to recover medical expenses extends beyond age eighteen to age twentyone because parental support obligation continues until twentyone holding that as 2330155 applies the twentyone day period for payment to ppi payments holding that a five day discrepancy between average days outstanding during the prepreference period versus during the preference period did not make the payments out of the ordinary course of business holding that in computing time to determine whether an act was performed within a specified period of time under the statute of limitations the first day is excluded and the last day of the period is included