What do people who do back office work in pharmaceutical companies do? Is the work experience of this position a medical experience or a clerk or something?

Backstage work of pharmaceutical companies: counting the performance reports of representatives, applying for various gifts and materials, calculating working hours, sending and receiving emails, and staying in the office when nothing happens, basically that's all.

This belongs to a clerk, which is different from medical work experience. Medical work experience generally refers to sales experience.