> Incidentally, why aren't there more part time positions?

It is obviously easier to manage a small group of people who work full-time than a larger group of people who work part-time. So, if there does not exist a strong wish for part-time positions from the employees, few will be created.

Also, a lot of employees are there "for the money". So getting paid much worse for a part-time position is considered to be the worse deal by many employees.