Muslims working for Amazon in Minneapolis say they fear being fired from the distribution center after taking breaks to pray.
All workers are required to meet strict packing quotas of 240 boxes an hour but the performance of practicing Muslims is affected because they are required to pray five times a day.
Amazon has refuted the claims saying the workers were given a paid prayer break of less than 20 minutes but would be allowed to take unpaid prayer breaks for longer.
In a statement, the company say that productivity expectations would be adjusted if employees wanted to take the unpaid breaks.
'We work hard every day to ensure all of our employees are treated fairly and with dignity and respect'.
On Friday a group of Amazon workers, mainly Somali refugees living in Minnesota, protested outside the Shakopee center warehouse to demand better working conditions.
Waving placards they said employees are having their 'bodies wear out because of the stress from increased productivity demands'.
Khadra Ibhrahin, 28, told
Vox she could not easily take prayer breaks because she is required to pack 240 boxes an hour. That number can jump to 400 depending on the demand.
Staff are apparently penalized if they fall behind the packing rate. She said that taking breaks slows down the required rate which puts them at risk of getting fired.
'So most of the time we choose prayer over bathroom, and have learned to balance our bodily needs.
'Every time I walk through those doors, I am filled with this dread that tonight is going to be the night that I get fired.'