AMEC has been dumped from a contract to look after a steel plant in south Wales after a number of its workers were caught up in a theft probe.
The firm has been carrying out the £3 million-a-year deal at Corus's plant in Port Talbot for over 40 years.
But last month eight of its staff at the site were suspended following allegations that thousands of pounds' worth of plant and equipment had been stolen. Four Corus employees were also suspended.
Allegations included claims that the equipment had been used to carry out building work at a private home.
All eight Amec staff have since been dismissed or have resigned. Two of them were arrested and bailed by South Wales Police.