"employed" meaning "slave labour" to work on their projects
once "employment" is finished they get the flick back to Bangladesh or where ever they come from
"Saudi Arabia is a destination country for men and women subject to forced labour and, to a lesser extent, forced prostitution. Men and women from Bangladesh, India, Sri Lanka, Nepal and many other countries voluntarily travel to Saudi Arabia as domestic workers or low-skilled labourers, and many subsequently face conditions indicative of involuntary servitude, including nonpayment of wages, long working hours without rest, deprivation of food, threats, physical and sexual abuse, and restrictions on movement such as the withholding of passports or confinement to the workplace."
http://www.rhsansfrontieres.org/en/183-to-see/287-forced-labor-in-saudi-arabia
so much for the brotherly love raps
