http://www.glassdoor.com/Reviews/Employee-Review-EFI-RVW5844... http://www.justdial.com/Bangalore/efi-india-pvt-ltd-%3Cnear%...
So my guess is that they are actual EFL, India, employees who are flown in for some time, probably on a tourist visa (I've seen that elsewhere), but still paid their normal salary while they work here.
The truly exceptional situation here is that their salary happens to be so low it's below the minimum salary (edit for clarification: exceptional in that it also happens with employees whose salary is above the minimum, but then article would seem a lot less sensational).