Workers claim piles of undelivered parcels are stacked so high at a new Evri depot that they have fallen on workers.
The Health and Safety Executive (HSE) has been called in to investigate the claims, and bosses have been told to make changes.
One staff member, who wanted to remain anonymous, claimed packages had been 'falling' on workers and that employees had been forced to sort parcels outside instead of inside the depot as a result.
