Pros
The company pays well, has good benefits, and promotes quickly. If you can get into a department that doesn't directly support manufacturing (i.e. HR or continuous improvement) you are likely to reap the benefits the company has to offer, the rest are the ones doing the bulk of the work for the company without the free breakfasts and events.
Cons
The turnover in manufacturing is constant resulting in promotions in less than a year of working with the company. Within three years a 25 year old can be an associate manager. This has resulted in unprofessional and untrained management. The management doesn't know how to differentiate the desire to be friends with their reports versus delegating and managing them. Across departments individuals are backdating and forging peers initial and dates on documents. HR and management brush these actions under the rug rather than taking care of the problem. Despite concerns about lack of breaks in manufacturing, management seems to alleviate none of these issues. It takes an employee being gravely injured to allow the other employees a lunch or water break from the clean room. Health and safety issues are constantly brought to management, HR, and EHS. Issues like no breaks for 10 hour shifts, rusting equipment, and hoses leaking 10N NaOH are constantly ignored. The culture of the company has diminished. They no longer seem concerned with a person's personality fitting with the Regeneron 5, just the need to rapidly fill hundreds of positions at a site that is at max capacity. Individuals are trained poorly, pushed to off-shift positions with limited guidance and scolded for any mistakes made.