Anish Adhikari awoke at the Qatari labor camp at 4 a.m. to diarrhea from last night’s rotten fish. His tonsils were swollen from the limited water made available by his employer while working 14 hours a day in 125-degree heat. But he remained hopeful that building air conditioners for 80,000 ticket-holders could provide the equivalent of $8,000 over three years to support his family in Nepal. That he could pay back the loan shark who’d secured Adhikari a job beginning in 2019 with the Hamad Bin Khalid Contracting Co. (HBK), the contracting firm owned by the the highest echelons of...