Airlines in the United States of America have varying total time requirements to determine eligibility for the potential employment of applicants. Why do airlines set total time requirements beyond the minimums that are present to achieve the required ratings?
I realize that this question is prone to answers that are purely speculative or opinion based, so I caution against posting such an answer. I am asking for concrete reasons. For example, airline executives may have given answers in the form of interviews. I also speculate that airlines may have insurance requirements or institute total time requirements to control the number of applications they get.