If those terms include the potential for predictable harms like lack of healthcare or housing if an agreement isn't reached, then yes, I think that is indeed an engagement in violence.
Now I'm not saying that the employer is necessarily morally culpable here — I'm sure most employers would like nothing more than to not have to worry about their employees' healthcare, and certainly I doubt many people enjoy having the ability to take it away. But it doesn't change the fact that it's impossible to have a real negotiation when inelastic demands are (potentially) unmet. Someone under threat of losing health insurance or housing is negotiating under duress, contrary to the comment I replied to.
There can be labor monopsonies but it is not a rule; I promise you that the key employees at a SaaS startup tend to have plenty of options.
Under this principle no human has ever been able to consent to anything in the history of the world. Certainly 99.99% of humans.
This would also imply that the best thing ethically is not to give people goods in exchange for labor because the simple act of interaction with them puts their housing and food needs under your responsibility.