Workers at Royal Doulton's doomed Nile Street factory say they have been working overtime in a bid to cope with demand. Yet in March, the company announced it was shutting the factory with the loss of more than 500 jobs and moving production to Indonesia.
Managers at Royal Doulton have refused to say how many workers are involved in the overtime.
Redundancies at the Nile Street factory will begin in October.
Product demand
Staff at the factory have told BBC Radio Stoke that they have been doing Saturday overtime since the production of Royal Albert lines restarted in Stoke-on-Trent in April.
They say that as well as weekends, they are also doing extra hours through the week.
The potters' union Catu confirmed some staff at the factory were doing overtime.
A spokeswoman for the company would only say the extra work is being carried out because of demand for their products.
Last month, Royal Doulton chief executive Wayne Nutbeen told BBC Radio Stoke that the work had been brought to Nile Street because demand for Royal Albert had surpassed expectations.
The factory is due to shut completely next year.