I thought the reason there were so many foreign workers in Singapore was because they were cheaper than robots. But perhaps this graph focusses on manufacturing rather than construction, and manufacturing jobs aren't as open to foreigners as construction ones are?
By the way, don't think of our foreign construction workers as unskilled. I was talking to some of them from Bangladesh and they've attended polytechnics in Dhaka and have to go for courses on how to paint buildings over here. My ancestors were coolies; these guys are smarter than them.
Via IEEE Spectrum.
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