ment that the Pregnancy Discrimination Act, at least in the context of explicitly bargained-for wages and fringe benefits, is a gratuitous and perhaps idle interference with labor markets — which it may be, but that is not our business.
The argument that retroactive application of the Supreme Court’s interpretation of the Act would be unjust is a separate argument, but also lacks merit. Judicial decisions normally are retroactive; that is, they apply to conduct that occurred before the decision was rendered. This result is due not to the myth that courts do not make, but only find, law, so that their decisions merely declare what was the law all the time, but to a sense that as between two surprised parties the burden of surprise should rest on the party who guessed wrong about the direction in which the law was moving; to recognition that retroactive application is an important check on courts’ innovating too rapidly (they are made to consider the costs of discontinuity); and perhaps to a sense that since statutes themselves frequently upset expectations, see, e.g., Bradley v. School Board of City of Richmond, 416 U.S. 696, 94 S.Ct. 2006, 40 L.Ed.2d 476 (1974), we should not be unduly dismayed when decisions interpreting statutes do so as well.
The major exception to the principle that a judicial ruling applies to conduct engaged in before the ruling was made is for decisions that overrule established precedents on which substantial reliance had been placed.
Newport News did not overrule any decision by the Supreme Court, but it did overrule our decision in
Joslyn. This would be a highly pertinent consideration, see
Saint Francis College v. Al-Khazraji, — U.S. —, 107 S.Ct. 2022, 2025-26, 95 L.Ed.2d 582 (1987);
Anton v. Lehpamer, 787 F.2d 1141, 1143-44 (7th Cir.1986), and would serve to distinguish
EEOC v. Texas Industries, Inc., 782 F.2d 547 (5th Cir.1986), which applied
Newport News retroactively in a circuit that did not have a
Joslyn -type precedent — but for the fact that
Joslyn was decided after the Vu-citech group negotiated the collective bargaining agreements on which their liability for sex discrimination is based. In almost identical circumstances, the Ninth Circuit applied
Newport News retroactively. See
EEOC v. Puget Sound Log Scaling & Grading Bureau, 752 F.2d 1389, 1392-94 (9th Cir.1985); see also
Goodman v. Lukens Steel Co., — U.S. —, 107 S.Ct. 2617, 2621-22, 96 L.Ed.2d 572 (1987).
Occasionally, it is true, decisions are applied only prospectively even though they have not overruled previous decisions but merely resolved novel and difficult questions. See, e.g., Allen v. State Board of Elections, 393 U.S. 544, 571-72, 89 S.Ct. 817, 834-35, 22 L.Ed.2d 1 (1969). So any decision which (1) “establishes] a new principle of law by overruling clear past precedent on which litigants may have relied or by deciding an issue of first impression whose resolution was not clearly foreshadowed” is a candidate for prospective application, provided that such application (2) will serve (or at least not disserve) the operation of the new principle of law and (3) retroactive application would be inequitable. Chevron Oil Co. v. Huson, 404 U.S. 97, 106-07, 92 S.Ct. 349, 355, 30 L.Ed.2d 296 (1971).
The first condition is satisfied here: the Supreme Court’s interpretation of the Pregnancy Discrimination Act in Newport News was one of two equally plausible interpretations of an ambiguous statute. Of course, the first condition, stated as broadly as it is stated in Allen and some other cases, such as Keith Fulton & Sons, Inc. v. New England Teamsters & Trucking Industry Pension Fund, Inc., 762 F.2d 1124, 1137 (1st Cir.1984), will often be satisfied; and this has worried some courts, see, e.g., Budinich v. Becton Dickinson & Co., 807 F.2d 155, 159 (10th Cir.1986) (per curiam), cert. granted, — U.S. —, 108 S.Ct. 226, 98 L.Ed.2d 185 (1987), but their worry is misplaced. The first condition is just a threshold. If the ruling was not foreseen or readily foreseeable, the court should at least consider (if asked to) the possibility that retroactive application would cause so much turmoil that the ruling should have only future application. The presumption remains