Here's recent labor slavery in Scotland http://www.theguardian.com/global-development/2016/may/28/slavery-human-trafficking-hotel-workers-bangladesh-scotland h

Here's recent labor slavery in Scotland http://www.theguardian.com/global-development/2016/may/28/slavery-human-trafficking-hotel-workers-bangladesh-scotland http://www.theguardian.com/global-development/2016/may/28/sl... The victims feared being killed if they escaped back to their homes, so I'd say it's more than just "wage slavery".