I think you are looking at much higher rates. The question is not what it cost to them, but what they will make from that much time. They may pay the worker 20

I think you are looking at much higher rates. The question is not what it cost to them, but what they will make from that much time. They may pay the worker 20 dollars an hour, but that worker may be earning them 100 or 200 or even 1000 an hour, and that is Amazon's loss if they get an hour's break. I am not an amazon employee, and this is standard in every industry ... the employee salary is just a small part of what it costs an employer. The corporate office, the worker's office (or warehouse), the management overhead etc., all add up to what it costs the company per hour of employee work and that is the bare minimum we should plan to donate (per above formula), and then what I mentioned is the profit side of things which would be even higher.