If the choice is between who ties you up and not weather you get tied or not then yes, its coercive. Labor is a buyers market, you can't just "sit on" on your labor until a good offer comes along (without welfare)
My point is that a worker existing within such a 'hierarchy' (answerable to management, bosses, etc.) should be free at all times to abandon this voluntary 'hierarchy' and (1) create an organization within which he/she is at (or somewhere near) the top of the 'hierarchy' (entrepreneurship), (2) join an existing 'hierarchy' (wherein he/she will likely be lower in the scheme of things), or (3) abandon these hierarchies altogether and join/form a non-hierarchical association such as a cooperative, commune, etc.
The thing i'm arguing against is the claim that you can't voluntarily be a part of a hierarchy. You can as long as you have freedom of choice and opportunity which our current corporatist system simply does not allow in many cases.
And of course if people wish to form collectivist institutions they should be free to do so as long as it's VOLUNTARY.
For example, State universities SHOULD be seized by the students and faculty under the homestead principle. Just as an individual comes to own that which was unowned by mixing his labor with it or using it regularly, a whole community or society can come to own a thing in common by mixing their labor with it collectively, meaning that no individual may appropriate it as his own. This may apply to roads, parks, rivers, and portions of oceans.
Some people seem to be under the impression that i'm against collectivist systems.