The following excerpt is from Bland v. Fessler, 88 F.3d 729 (9th Cir. 1996):
individuals at work in private businesses are entitled to expect that they will not be disturbed except by personal or business invitees, just as, at their residence, they are entitled to expect privacy. Cf. Mancusi v. De Forte, 392 U.S. 364, 369 (1968) (holding that the occupant of an office has standing to challenge warrantless search of his office because entitled to expect only invitees to enter his office).
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