Recently (the past year or so) there has been very high turnover - this has caused those who remain behind to have to cover more than normal, which then perpetuates the problem of being over-allocated and subsequent resignations.
Also, the company is too SOP-driven (in that if you need to scratch yourself, there's an SOP for that!). It is just over-the-top. The company talks about critical thinking skills and root cause analysis and attempting to look at the bigger picture - but then the SOPs and processes do not allow for that. It creates an environment of funneled views. Employees are taught to follow minutia rules a, b and c rather than stepping back to understand what the overall process should be, or the reasoning for doing something. Basically PPD's culture squelches creative and critical/logical thinking and thinking outside the box. Instead it promotes factory-like working, stuck in a box, color only within the lines.