Why interviewers ask this
This question checks whether you notice when someone is being overlooked, credited unfairly, or treated poorly, and whether you are willing to speak up on their behalf even when it is not strictly your responsibility to do so. It is a strong signal of the kind of colleague or manager you would be, since a workplace where people advocate for each other tends to function better than one where everyone only looks out for themselves. Interviewers are also listening for how you advocated, since there is a real difference between doing it constructively and simply complaining on someone's behalf.
How to structure a strong answer
Describe the situation the teammate was in, whether that was being overlooked for credit, unfairly criticized, or excluded from an opportunity they deserved. Explain what you specifically did to advocate for them, whether that was speaking up in a meeting, raising it privately with a decision-maker, or making sure their contribution was visible. Close with the outcome for the teammate and, if relevant, how it affected your working relationship with them afterward.
Example answer
A junior colleague on my team had done the bulk of the analytical work behind a proposal that ended up getting significant executive attention, but in the meeting where it was presented, another more senior team member described it almost entirely as their own effort without mentioning her contribution. I did not want to create a confrontation in the room, so afterward I mentioned to our director privately that the underlying analysis had actually come from her, and I made a point of publicly crediting her specifically in the follow-up email summarizing next steps. She was later invited to present the next phase of the work herself, which gave her direct visibility with leadership she would not have otherwise had. She thanked me for it afterward, and it also strengthened trust between us on future projects since she knew I would not let her contributions go unnoticed.
Common mistakes to avoid
Avoid a story where the advocacy involved publicly embarrassing or confronting someone else in the moment, since a quieter, more constructive approach usually reflects better judgment. Do not make the story primarily about your own credit for having advocated, keep the focus on the teammate and what changed for them. Also avoid an example where the advocacy did not actually lead to any real outcome, show the concrete result of speaking up.
Frequently asked questions
Before your next interview, it helps to have the fundamentals down. Our complete guide to preparing for a job interview covers the basics, and the STAR method is a reliable way to structure almost any answer under pressure.