28 Powerful Things You Should Never, Ever Say to Your Boss

“I Don’t Think X Should Work With Us”

Why It’s a Problem: It’s not your role to evaluate your colleagues’ performance unless asked. Criticizing a coworker can be seen as unprofessional and divisive.

Better Approach: If you have serious concerns about a coworker’s impact, address them privately and constructively with your boss. “I’ve noticed some issues with X’s performance that might be affecting the team. Could we discuss how to address them?”