The lowest paid worker in the richest country in the world should get a living wage, not slave wages. And the lowest paid workers work the hardest, not the least.
Government Force "should" impose your perception of "ought", on millions of other humans, in your society?
and your "should" "ought" to be backed, by Government Force, because working "hard" "deserves", and is "entitled" to, higher pay? If so, perhaps high-skill, non-physical, jobs,
e.g. computer technicians, "should" receive lower pay?
Prima facie, you are demanding, that your personal sense of "morality" "should" & "ought" to become State Religion, backed by Government Force (
i.e. Threats to human life, limb, liberty, & property).
From a "libertarian" perspective, employer-employee social-and-economic transactions "should" be
non-violent (
i.e. no Threats of Government Force); and "ought" to be
fair (
i.e. mutually voluntary, the employer willingly paying, and the employee willingly being paid -- without unfair other-party social support, for one or the other,
i.e. "bullying").