Interview was with several team members. Each for a short period. Different interviewers asked different types of questions, some more challenging than others. But it was not a grueling process, but it was a long process.
I applied through college or university. I interviewed at Mercer in Nov 2019
Interview
First is a video interview (self-recorded) then final round is at their office. It consisted of 5 interviews - 3 behavioral interviews and 2 cases. Interviews were with Principals, Analysts, and always one on one.
Interview questions [1]
Question 1
The two cases were not typical cases (like the ones in Case In Point). Instead I was given a packet with information that I was supposed to understand. My interviewer left the room for 15 minutes, and then came back and asked me questions. The first case was about strategic communications and the second about salary/compensation after a M&A
I applied through college or university. I interviewed at Mercer (Los Angeles, CA) in Oct 2013
Interview
Short case and behavioral interview (two 45 minute interviews) followed by a super day of five 45 minute interviews, including lunch and three case interviews. A mix of behavioral and informal discussions and technical case reviews.