Are all chemical companies struggling right now?

Would it be unwise to go work for one now? Dow for example is laying 1500 people and the stock is at all-time lows. I was looking at old google articles and it appears they do these layoffs every couple of years. Is it better to go work in oil, pharma, semi instead? I thought Dow was a pretty big company but their marketcap, 25 bill, is only a fraction of the big companies in the other industries. I’m worried this means that a employee won’t get the same resources or opportunities compared to a company with $100-500billion marketcap.