Poor management, compensation, and few opportunities for advancement. - Senior Scientist PPD Employee Review

Very poor compensation (you'd have to be fresh out of college and still living with your parents to find their compensation sufficient to live on...). Few opportunities for advancement (very rigid in their structure and not based on capabilities/capacity of a particular individual) and once you get pigeonholed into a particular area/discipline, it is very unlikely you'll be able to switch to a different area. Very few truly knowledgeable people there (perhaps because of the very high turnover rate... It seemed like ~10-20% per year).