Pros
I worked 17years for Dow. Great learning, excellent salary and benefits, worked in Europe and US, diverse colleagues. Lots of opportunities for study and personal development. I left the company as I was fed up with management and the company's short term vision. They let go one of my best co workers. I am now working for Exxon in Houston. Another giant company but I have to say more capable managers and even in the current downturn no layoffs or short term panic!
Cons
HR departement (especially in Horgen Switzerland and Midland Michigan) are very eager to please the management instead of providing neutral , professional advice. Layoffs are random and seem to happen every 5 minutes. Performance system is a farce. I've seen high performing colleagues being told to leave. It effects the overall motivation and atmosphere and creates a sucking up effect and fear culture. Some very bad managers are in positions of power. Headquarters are in Midland Michigan, small-town mentality and all about Dow. You have to like it and it definitely doesn't help to attract top talent.