P&O Ferries has hit back at claims that it tried to get its new cheaper agency staff to accept even lower wages.
The RMT Union said it received reports of new workers at Dover being asked to sign new contracts, replacing ones they had signed weeks ago, on lower pay.
It reported P&O Ferries to the Maritime and Coastguard Agency, which ensured the new workers retained their wages.
But P&O Ferries told the BBC "no agency seafarers were asked to accept reduced wages".
The company, which has come under fire for sacking 800 workers without notice and replacing them with cheaper agency staff in March, said there were "no plans to change or reduce the wages" of the new seafarers.
Its statement on Monday came after the National Union of Rail, Maritime and Transport Workers (RMT) claimed a seafarer on the Spirit of Britain ferry at Dover, hired as a replacement for the sacked staff last month, contacted the union begging for help in a dispute over pay.
The union said the company was now "trying to bring in an exploitative model, with the lowest possible standards they can get away with".
In an email seen by the BBC the worker wrote: "They don't care about our rights. They try to give us less money. We are desperate."
The seafarer told the union they were being forced to work without contracts, after old ones had expired. The worker claimed documents had also been lost by P&O Ferries.
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