...any such NDA should be revealed ahead of time, including the precise language of the NDA...
Is this a common thing with NDAs? ISTM it's rare that during the hiring process one would receive a folder containing all the NDAs one might potentially be asked to sign while working at a firm. One might receive an "initial" NDA, to sign before starting, but every time there is an ownership change one can expect a new round of NDAs, because apparently NDA terms are a rapidly-evolving area of contract law.
Requiring a new NDA as a condition (but not prom is) of continued employment is one thing; requiring it as a condition of exercising a statutory right is another.
Is this a common thing with NDAs? ISTM it's rare that during the hiring process one would receive a folder containing all the NDAs one might potentially be asked to sign while working at a firm. One might receive an "initial" NDA, to sign before starting, but every time there is an ownership change one can expect a new round of NDAs, because apparently NDA terms are a rapidly-evolving area of contract law.