The Supreme Court’s decision Feb. 20 in LaRue v. DeWolff, Boberg & Associates was touted as a big win for employees dissatisfied with how their companies are managing their 401(k)s.

The ruling’s interpretation of the Employee Retirement Income Security Act seems to open the door to a torrent of suits by employees claiming breach of fiduciary duties by their employers. But a concurring opinion by Chief Justice John Roberts Jr. is leading company counsel to say, “Not so fast.”