competition. but to build it, qatar has relied on an army of migrant workers, mostly from south asia and africa, toiling in temperatures of up to 120 degrees, and living in crowded, squalid camps, like this one. migrant workers are cheap because they re being exploited. reporter: mustafa qadri founded equiderm, an organization that investigated alleged labor abuses inica ta, including workers going unpaid for months at a time and unsafe conditions with deadly results. it s very hard to give an exact figure. i would suspect it s actually in the hundreds. i think hundreds of workers have died to make this world cup possible. reporter: budhan pandit left his home in nepal to build roads in qatar, sending money back to his family before he was killed in an accident last year. his widow, urmila, told us her family received no compensation, just her husband s body.