Exploitation of Workers in Singapore

For those who did the HCI Prelim competition AQ on competiton...the point that competition may lower prices of goods, but this often comes at the expense of the worker's exploitation, in this case here -- their appalling accommodation and docking of their pay. Note also the reasons why they are able to be exploited: the threat to send them back to their country, which is a very real threat to them coz their typically owe the middleman or agent huge sums of money to arrange for them to come to work here...hence, before they even start working, they already owe a huge sum of money, so they cannot afford to be sent home. Hence, they suffer in silence.....

Qn. How far should firms be allowed to limit their workers’ rights when 
profits are at stake? (Cam. 2014)