Two interviews - 1 with recruiter and 2 with actual Merck employees. Was an easy process, just took some time to finally hear if I got the position or not.

After an initial screening, I was given exercises to do to both examine my qualifications for the job responsibilities but to also determine my interest in the job duties. It took over 3 days to complete the projects which would be discussed at 3, one-hour interviews two-weeks following. I expected of course that a rejection was possible, but after 3-weeks after the 3 interviews and no word, I got a standard, automated rejection after sending a check in e-mail to the original screener. I think if you are asking candidates to submit 3-day+ assignments prior to taking time out of their working days for 3 one-hour interviews, it's only fair to send a somewhat personalized rejection.