when a claimant is working at the time of classification. When a claimant remains attached to the labor market a claimant’s wage earning capacity for a permanent partial disability, according to <em>Buffalo auto</em>, should be determined based on the difference between the claimant’s earnings at the time of his classification and his former average weekly wage. <em>Matter of Buffalo Auto Recovery</em>, 2009 NY Wrk Comp 80703905. Thus, according to <em>Matter of Buffalo</em>, there are two different methods for calculating the loss of wage earning capacity of a claimant with permanent partial disability, depending on whether the claimant was working or not.