As the aftermath of Wells Fargo’s fraudulent-account scandal continues to unfold, this much seems certain: To regain trust going forward, Wells Fargo executives must revamp its entire corporate culture from the ground up, in which employee concerns are heard and valued, not swept under the rug.

Jaclyn Jaeger is a freelance contributor to Compliance Week after working for the company for 15 years. She writes on a wide variety of topics, including ethics and compliance, risk management, legal,...