By that logic, the word "forced" is entirely meaningless.
You don't have to surrender to the police after committing a crime! You can just fight them and face the consequences!
You don't have to pay taxes! Just run to Iran or somewhere! They don't cooperate with your government.
You always have a choice.
But when the consequences of a choice are dire, and voluntarily imposed by an authority that really wants you to make an other choice, you are effectively forced into that other choice.
Such is the case when you depend on your job to pay your mortgage, feed your family and fuel your car, but your employer, backed by the state's mandates, suddenly wants you to take an experimental vaccine or face termination.
Except in the cases you listed you have to do those things. So yes you have to pay taxes and yes if you committed a crime you have to surrender to police. You have no choice in the matter and society will punish you otherwise. There is no contract that you agree to in those circumstances. You are forced to by law. No one is forced by law to the vaccinated.
Employment is a different situation. You have a contractual relationship with your employer that you can accept or refuse to accept. Conditions of employment can and do change and you can choose to remain or leave. There is no sanction beyond the termination of said contract by one party or another. (With every thing that can entail like severance for example)
No different than any other condition added by the employer. Your job might depend on you providing a credit or criminal background check. That may seem intrusive to some but it’s a requirement. If you don’t do it you can be terminated and will have to seek alternate employment. Perhaps employment that does not have conditions that you prefer not to have.