“Hostage” doesn’t seem like the right model there, any more than being forced to work at all for a living counts as being held hostage.
There's nothing in the natural order that says I must starve if I don't report to a particular building every day and sit at a particular desk when the tools for me to perform the same labor at a place of my own choosing exist. Forcing me to do so in order to maintain an employment contract is coercion, plain and simple, and the sooner society destroys that norm the better.