this is something that modern people barely even understand
until you have worked for a few asshole employers, then you learn a nice and important fact about contracts
unilateral binding in contracts is a violation of contract law
that is, if the asset being handled is not bilaterally handled, it is slavery
this is why at any point in an employment contract you can just walk out and sign off and trigger the escape clause
what fiat and free banking fractional reserve contracts do is make it so that one party does not have the right to cancel the contract when the other party changes the terms
that is a violation of contract law, it is not honoring your word and it is essentially deceit