GKN Aerospace has been accused of using dirty tricks to force workers to accept longer hours and cuts to overtime pay.
A row over the new terms and conditions intensified this week, amid allegations managers and other staff had voted in a shop-floor ballot.
Management at the East Cowes company has been accused of trying to intimidate its workforce into accepting the cuts, and staff who have contacted the County Press said they had been told to sign up or risk redundancy.
The latest allegations, that senior staff voted in a ballot for shopfloor workers, which they should not have done, has added fuel to the fire.
Unite’s regional organiser, Pat Breslin, who was yesterday (Thursday) called in to meet workers, described the situation as 'explosive’.
"There are a number of allegations that have come from the workforce about the way the ballot was conducted, that there were some irregularities. There have been allegations of bullying and intimidation by the management," he said.
"We will not accept the imposition of terms and conditions that have been voted through in an unfair ballot."
The ballot on the company’s latest pay and conditions offer was the third put to the workers. It is understood the first offer was overwhelmingly rejected, the second narrowly rejected and the third narrowly accepted.
It is not known whether the result of the third ballot will remain valid, because of the concerns over its legitimacy.
GKN is the Island’s biggest industrial employer, with 1,100 people. It recently recorded a five per cent rise in pre-tax profits, to £278 million, the group’s aerospace business delivering a 37 per cent rise in profits.
The County Press received no comment from GKN over the allegations as it went to press.