>>That begs the question: Will you tell us “what a ‘right’ is”?<<
Since it is not a question which contains its own answer, it begs no question I can fathom. As far as raising the question, the most useful definition is that which is spelled out in the framework established by the USC and its amendments.
For example, we have lefties saying there is a “right” to health care. There is a “right” to a college education. There is a “right” to housing.
None of these are rights by any possible legal definition.
The underlying issue here is whether your Constitutional “rights” carry into a private contract. In general, the answer is “no” — in the instant case it is certainly “no.”
This is an issue to be addressed by the employer in whatever way is appropriate, given the employment contract. There may be labor laws involved, but this is not a Constitutional “rights” issue.
I notice that in your response at post 70 you didn't actually answer that question. Posting that "...the most useful definition is that which is spelled out in the framework established by the USC and its amendments" is more a diversion than an adequate answer.
Is the answer to the question "no"?