The doctrine is not absolute and there are many cases where it is applied seemingly inconsistently. Rust V. Sullivan probably being one of the most notable, wh

The doctrine is not absolute and there are many cases where it is applied seemingly inconsistently. Rust V. Sullivan probably being one of the most notable, where the court upheld a physician's First Amendment right for referring abortions could be constrained on condition of federal funding for their practice. If a person is aware that he/she is waiving their rights, and is not some accidental waiver, the government is not being deceptive or coercive, the person is free to reject the offer from the government without sanction, and the person waiving their right has the capacity to understand that they are doing - then there is no (generally) constitutional violation. In the context of employment or government contracts, the government does not guarantee employment to every person. The fact that a potential employee (for example) may be impoverished and desperate for a paying job does not make the government’s conditions for the job coercive, unless the government specifically created the person’s unemployment.