Please provide only 10 lines. Also use few technical terms. Thank You!! Rating on the way..

You're the supervisor of a group of employees whose task is to assemble disk drives that go into computers. You find that quality is not what it should be and that many of your group's devices have to be brought back and reworked; your boss says that "You'd better start doing a better job of training your workers." A) What are some of the "staffing factors" that could be contributing to this