Amazon and UPS know the output because it's an easily measurable menial task. You won't be able to do that for knowledge work, and you'll end up using proxies

Amazon and UPS know the output because it's an easily measurable menial task. You won't be able to do that for knowledge work, and you'll end up using proxies like butt-in-chair time or jira-tickets-closed which are easy to game and push away the actually competent workers that have outside options. Just do your job as a manager.