Interviewers want to see if you understand change management principles and can separate business value from uncontrolled expansion, which shows PM maturity.
Define both terms briefly, then give a concrete comparison from your experience. Emphasize that both need a decision from the sponsor, but legitimate changes are evaluated and approved, while scope creep bypasses that process.
Start by defining the difference through the lens of process, not emotion. Say plainly that a legitimate change request is a formal, documented proposal that goes through your change control board or sponsor for evaluation, and it typically comes with an impact assessment covering cost, timeline, and resources. Scope creep, by contrast, is the quiet accumulation of unapproved work, often delivered through informal conversations, side requests, or "small additions" that never get logged. In the Philippine workplace, this often shows up as a client or stakeholder saying "sabay na lang" during a call, and if you do not capture it, it becomes creep. Then explain your handling: for a legitimate request, you assess it, present options to the sponsor, and get a written decision, even if that decision is to reject it. For scope creep, you do not just absorb it; you pause, name it, and convert it into a formal change request, or decline it politely by saying the current scope is fixed and you can raise it through the proper channel. Keep your tone calm and factual, and if asked for an example, describe a time you logged an informal request and got it approved, which shows you protect both the project and the relationship.
Some Filipino candidates over explain with 'Kasi po, ang dami na pong request, hindi na kaya' which sounds emotional. A better answer is to calmly state the decision rule: if the change supports the goal and has a sponsor, it is legitimate; if it is informal and unfunded, it is scope creep.
Situation
In my previous role as an event planning assistant, I had to help manage a university career fair where an employer asked to add a panel discussion one week before the event.
Task
I had to decide whether the panel was a legitimate change that added value or an unplanned scope expansion that would strain our small team.
Action
I compared the request with the event's original goals and saw it would increase student engagement but would require an extra room, a moderator, and an updated program. I presented the impact to the lead organizer with a recommendation to approve only if the employer would cover the added room cost. When a second request for extra booths arrived informally, I blocked it and directed it to the change log.
Result
The panel was approved as a formal change with the employer covering the room cost, and the extra booth request was deferred to the next event. The career fair met its attendance goal of 300 students.
Legitimate changes align with project goals and get funded; scope creep is unplanned and unfunded.
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