This is something I cooked up for my campaign before finding Arenamontanus' underground railroad article (which should mesh with this material relatively easily).
Comments, questions and criticism are welcome.
Some hypercorps and many criminal cartels run real slavery operations. They can vary in form from wholly-virtual "digital sweatshops" to fully physical. What is common to all of them is that the operators do not offer any pay or compensation or do not intend to follow through with their promises. Some use psychosurgery to instill "slave mentality" on their victims while others offer reasonable (or even lucrative) salaries/payoffs and betray their workers in the end. In latter scenario it's common to delete the egos, reboot an older backup and put it back to work; this is known as "groundhog day loop" or "cookie monster loop".
Planetary Consortium officially condemns slavery as any other position would be utterly unpalatable to the public opinion which considers indenture dubious enough. PC makes lot of propaganda pointing to slavery cases and basically saying "Indenture is not slavery. This is real slavery and we don't tolerate it".
Getting caught running such operations is punished heavily: More than one criminal hypercorp has been dismantled and it's management permanently executed for such crimes. PC Oversight takes these cases seriously, nobody doubts that. And let's not get into what sorts of punishments and virtual hells anarchists and extropians have cooked up for clowns who get caught running these sorts of operations...
Most autonomists hold the cynical view that PC cares more about market distortions and "unfair advantage" caused by such operations than the actual slavery and that the only reason PC doesn't endorse this sort of real slavery is that it would start an instant revolt. The Accuracy of these assesments remains unknown.
While Firewall considers these sort of things as reprehensible, they're usually not existential threats; SOP is to anonymously tip off the relevant authorities and move on to more important matters. Of course, nobody is going to raise any fuss about a small and discreet pro bono job if there isn't anything more important going on.
*Player Characters meet an indentured acquaintance who doesn't remember them at all. There isn't any backup restoration in his record since his resurrection and indenture, but you clearly remember tossing few beers with him in that isolated mining operation while smuggling those nanofab blueprints...
Recommended reading: Vernor Vinge's The Cookie Monster. The Scenario in this novella should be very easy to insert into any Eclipse Phase campaign with minimum tweaking.