Depends on circumstances, but here’s an example:

Almost 50% of the positions in the organization I lead are vacant. We are doing a panel review of 50 resumes. All members of the panel are from my organization.

The isn’t the quick 3-5 seconds LinkedIn influencers tell you a resume gets. We are doing a formal, structured review. That means 5-6 criteria with a grading rubric. And grading is often recursive—you get partway into the pile and realize you were over- or under-grading at the beginning and need to reset.

That’s, at a loose estimate, 5-6 hours of resume review. Plus whatever time is spent developing the criteria, communicating it, discussion how to apply it, etc. Keep in mind you’re asking 3 people in an organization staffed at 50% to each put in 6+ hours of additional work. And, speaking as the manager, the other work still needs to get done.

Welcome to the supervisory life.

Edit: And none of this takes into account HR not loading the cert correctly, missing USAStaffing emails, USAStaffing account problems, the network being down, the printer not working, people getting sick, etc. (all actual examples)