A report from international advocacy group Oxfam says poultry workers in the United States labour in a “climate of fear”, with some forced to wear diapers on the job.
It says many workers are afraid to ask for permission to go to the bathroom.
The report says a worker at a Simmons Foods plant in Arkansas told Oxfam that she and many others resorted to wearing diapers.
Simmons says the allegations are “troubling” and the refusal of bathroom breaks isn’t tolerated.
Tyson says it’s concerned by the claims, but currently has “no evidence they’re true”.
The National Chicken Council says it believes that “such instances are extremely rare”.