It's much worse in neighboring countries like Malaysia. There maids are usually not allowed to leave the house unaccompanied because of the strict immigration laws that would punish heavily the family if the maid ran away.

Between that and the poor living conditions, it's indentured servitude for the time of their contracts. Absolutely awful.

HK is doing much better and has stronger laws to protect domestic workers (actual day off, etc...), Singapore is catching up but in other countries it's extremely sad.