132
Opinion of the Court
To implement the mandate of § 8(h) in this class of cases, then, "disability" must be read broadly enough to cover loss of capacity not just as a product of the worker's injury and present market conditions, but as a potential product of injury and market opportunities in the future. There must, in other words, be a cognizable category of disability that is potentially substantial, but presently nominal in character.
There being, then, a need to account for potential future effects in a present determination of wage-earning capacity (and thus disability) when capacity does not immediately decline, the question is which of two basic methods to choose to do this. The first would be to make a one-time calculation of a periodic benefit following the approach of the common law of torts, which bases lump-sum awards for loss of future earnings on an estimate of "the difference . . . between the value of the plaintiff's services as they will be in view of the harm and as they would have been had there been no harm." Restatement (Second) of Torts § 924, Comment d, p. 525 (1977). This predictive approach ordinarily requires consideration of every possible variable that could have an impact on ability to earn, including "[e]nvironmental factors such as the condition of the labor market, the chance of advancement or of being laid off, and the like." 4 F. Harper, F. James, & O. Gray, Law of Torts § 25.8, pp. 550-551 (2d ed. 1986) (footnote omitted). Prediction of future employment may well be the most troublesome step in this wide-ranging enquiry. As the tripling of Rambo's own earnings shows, a claimant's future ability to earn wages will vary as greatly as opportunity varies, and any estimate of wage-earning potential turns in part on the probabilities over time that suitable jobs within certain ranges of pay will actually be open. In these calculations, there is room for error.5 Cf. id., § 25.8, at 553
5 As a simplified example of the sort of calculation that would be required under this approach, a factfinder might decide in the present case that Rambo has a 75% chance of keeping work as a crane operator with
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