What has been your greatest achievement in your working history?

Some hard thinking before the interview is needed in order to answer this question. The example that you choose should convey some of the principal qualities needed in the job applied for and should be explained clearly and concisely. What characteristics did you demonstrate at the time? Pick an example that has close relevance to this job to show that the skills you were using are transferable to the post on offer. A useful way to make sure you don’t ramble is to structure your answer into three key points. The first point could cover what the achievement was, the second could explain the circumstances or the background and the third point could explain why you feel that this represents the greatest achievement in your work to date.