Not really all its cracked up to be - Quality Specialist Merck Employee Review

Abusive work environment. Expect long hours with people you need to help and will never help you in return. Also expect to have 8 different things sent to you, all due yesterday, with harassing and demeaning calls and emails from middle management all day about them. If you try to take off, you'll get told you need to 'run the business' even as a low-level employee by your manager or their manager who makes 3x your salary. Also never expect a promotion unless you're willing to work consistent 16 hour days...no work-life balance for you unless you want to be stuck in the same role for 10 years!