Saudis that come here bring slaves all the time.
I've spent some time in the UAE,specifically Dubai.Although many Westerners have never heard of it it's right next door to Saudi and is populated by (and run by) people very similar to Saudis.Dubai has tons of money,both thanks to oil and huge sums of money being invested there from all over the world.
In Dubai one sees many,many foreigners.Something like 80% of those residing in the country are guest workers.The construction workers and those who do other "grunt work" (often in 120 degree heat) are from Pakistan,Bangladesh and Indonesia.One step up from them are Fillipinos...who are maids,work in hotels and in retail.
There are frequent stories about these guest workers being badly mistreated.Subhuman working conditions (120 degrees),no pay,physical abuse.
What little I've personally seen (particularly the 120 degrees) makes my skin crawl.