Pros
Everyone bonds about complaining about the leadership, management, terrible building, frustrating work environment, heavy work load, lack of respect and sadness at the number of people who quit. If you want to work at a 1950s factory where you sit next to a lab bench, are expected to work overtime but are told "don't use your overtime, it will reflect badly on me" by your boss then MSD is the place for you!
Cons
While working here I was attacked by a tiger. No wait, that would have been preferable to working at MSD. MSD < Tiger attack. I joined to work in a particular an R&D Department. After my first few weeks my trainer and co-worker quit. Then my boss quit. So I got moved to a different team and then my new trainer and co-worker quit. So we hired a new replacement employee who quit after 4 weeks. Next we had 3 other team members quit. More than 10 of my 15 person R&D Team quit within a year, with 4 of those being direct team-members of myself.