In South Africa, factories, farms, and homes are struggling to find labor after thousands of foreign workers left within weeks, fleeing sometimes deadly anti-migrant demonstrations that swept the country, accompanied by a tightening of controls on undocumented immigrants.

" It's time to cut off the grapes, and there is no one," Zimbabwean farmworker Aaron Majatamhe.

In South Africa, factories, farms, and homes are struggling to find labor after thousands of foreign workers left within weeks, fleeing sometimes deadly anti-migrant…