Schisgall v. Fairchild Publications, Inc., 207 Misc. 224, 232, 137 N.Y.S.2d 312 (1955). See Peitzman v. Illmo, 141 F.2d 956 (8th Cir. 1944); Taylor v. Atchison, T. & S.F. Ry., 92 F. Supp. 968 (W.D. Mo. 1950); Wampler v. Palmerton, 250 Ore. 65, 439 P.2d 601 (1968).
A separate line of cases, supportive of the Court of Appeals decision herein, holds that, though a breach of duty under a contract or lease necessarily interferes with the injured party's business relations with third parties, the injured party is limited to an action for breach of contract and may not recover in tort for business interference. Hein v. Chrysler Corp., 45 Wn.2d 586, 277 P.2d 708 (1954); Glazer v. Chandler, 414 Pa. 304, 200 A.2d 416 (1964). See N.A. Berwin & Co. v. American Safety Razor Corp., 108 N.Y.S.2d 677 (Sup. Ct. 1951); Sax v. Sommers, 108 N.Y.S.2d 467 (Sup. Ct. 1951). In Glazer, at page 308, the rule applicable to this group of cases is set forth as follows:
[W]here, as in this case, the allegations and evidence only disclose that defendant breached his contracts with plaintiff and that as an incidental consequence thereof plaintiff's business r nation ^hips with third parties have been affected, an action lie., only in contract for defendant's breaches, and the consequential damages recoverable, if any, may be adjudicated only in that action.
The distinguishing feature between the two lines of cases would seem to be whether the interference with business relations was a mere incidental consequence of the breach or a motive or purpose therefor. We have held that, in some instances, intentional interference with a business expectancy may be "privileged" and therefore not a basis for tort recovery. Calbom v. Knudtzon, supra; Scymanski v. Dufault, 80 Wn.2d 77, 491 P.2d 1050 (1971). A privilege to interfere may be established if the interferor's conduct is deemed justifiable, considering such factors as: the nature of the interferor's conduct; the character of the expectancy with which the conduct interferes; the relationship between the various parties; the interest sought to be advanced by the interferor; and the social desirability of protecting the