Those words do appear in several places in the contract! For example, part of it is a non-disclosure agreement wherein the employee agrees not to divulge any information they learn as a result of having this job which has been appropriately classified by duly appointed PRT representatives, including several entire categories of information such as other employees' secret identities, powers, the PRT's procedures, equipment and tactics, operational records, staffing and personnel records, ... updated instances of this list will be periodically published by the PRT and provided Employee. Disclosing such information will carry legal Penalties. Employment is at-will, see these sections for exceptions. 'At will' also matches a section on what power use the PRT may require of Employee in case said powers are limited per time period or if overuse has detrimental effects.
There are also a bunch of things the Employee must disclose! Their unique medical / dietary / psychological / ... needs (unless they explicitly sign an exemption waiving any claims related to the PRT not observing these), any past criminal record, membership in a legally protected group that is not otherwise obvious due to their secret identity or powers (unless they sign etc.), being a foreign or dual citizen, information about their powers which is relevant to PRT use of same (see this guidance for exceptions), any of this long list of things in case they happen after the start of Employment, et cetera, et cetera.
Then there is the section on penalties which may be imposed by the PRT due to various classes of offence. It is a (mostly) paramilitary government organization serving in part as a superpowered police force and so its regulations include things ordinary firms can't do to their employees, such as for example imprisoning them in case of crimes (or on suspicion of Master/Stranger influence).