Companies may want to tighten up their electronic communications policies in light of a recent court ruling.

Affirming an appellate decision, the New Jersey Supreme Court ruled unanimously in Stengart v. Loving Care Agency Inc. that attorney-client privilege applied to e-mails sent by an employee using a company-issued laptop to her lawyer through a personal Web-based e-mail account, shooting down her employer’s contention that its electronic communications policy eliminated her expectation of privacy.