Is it serious for R&D personnel of big American pharmaceutical companies to work overtime?

Seriously.

1. Competitive pressure: The industry in which big American pharmaceutical companies are located is very competitive. In order to maintain their market position and competitiveness, these companies need to constantly develop new products and innovative drugs. Therefore, R&D personnel usually need to work overtime to ensure the progress and quality of the project, thus helping the company to stay ahead of the competition.

2. Strict supervision: R&D's work in the pharmaceutical industry is strictly supervised, from laboratory research to clinical trials, each stage needs to follow relevant laws and regulations. This makes R&D personnel need to invest more time and energy to ensure the compliance of the project, which leads to more serious overtime.

3. High cost of R&D: Pharmaceutical R&D is a high-risk and high-input job. In order to recover investment and realize profit, large pharmaceutical companies need to develop more drugs with market potential in a limited time. Therefore, R&D personnel usually need to work overtime to improve work efficiency, shorten R&D cycle and reduce costs.

4. To sum up, the R&D staff of big American pharmaceutical companies work overtime seriously.