Ethnic bias would be eliminated in the latter case.
And even if the human doesn't do a better job, it's still the nicer way to be told by a person rather than a machine that you lost your job.
Given the fact that warehouse employees are pissing in gatorade bottles because they don't have time to use a bathroom I would suspect that participating in a religion that requires stopping work to prayer mid-shift or stopping to go breast feed would cause their quotas to drop.
So it's already pretty clear there's a huge bias towards only certain types of people who can even operate successfully in their warehouse as opposed to their corporate offices.
Although I guess it's all by design, reading through comments here or anywhere on HN about worker mistreatment outside of high earning tech salaries and you can see how little empathy exists among many people here. These are the people Amazon wants and needs working for them.
If break[employee] > 1 minute
employees[employee] = "bad employee"