There is evidence that Waterworld staff have been bullied into agreeing to work for nothing - being threatened with their names being added to a "hit list" and, when it's contract renewal time - "Goodnight Vienna!" What man or woman with family commitments is going to risk being thrown out of work? Whether these people are managers or staff, they deserve our help.
I totally agree with you - I've also heard rumours about people who don't volunteer for unpaid leave/work being threaten with it going against them at their KPI assessments, but there is a difference between the two groups in my eyes. Waterworld Staff who as I understand after recent cut backs are now fairly efficient and cost effective, whereas the cabin crew are paid above market rate (mainly old contract) coupled with low productivity.