Why cant they hire non share packaged employees? Why do they have to shrink their pie?
How many non-owner workers can you have before you stop being worker-owned? If four workers own 25% of the shares each, and the company employs 400 (or 4000) people are they still "worker-owned" in any meaningful sense?
I think it's not perfectly black and white, and we shouldn't really put some arbitrary line here. Would be nice if more worker-owned businesses shared details about their ownership structure, though.