Managers at a Birmingham factory have vowed not to budge on their pay offer despite the onset of another seven-day strike today.
Industrial action will recommence at Concentric Pumps in Erdington in the continuing row over a 2.8 per cent pay offer.
About 180 of the 380 staff at the site walked out earlier this month, following a series of one day stoppages.
Mike Trelfa, from the GMB said members had accepted changed shift patterns, top earners had lost up to £40 a week in bonuses, and staff had taken pay settlements below the rate of inflation over recent years.
Company performance had improved and the 2.8 per cent offer was the straw that broke the camels back, he said.
But a spokesman for the management said: "We think it is very sad that the industrial action is continuing.
"There has been a suggestion that we should talk with union officials, and the company has said it is prepared to talk. But we are not prepared to negotiate, we cannot increase the existing offer. We cannot afford. it."
The spokesman said that a share bonus scheme took the existing 2.8 per cent offer up to four per cent.
He said any further wage increases would damage the competitiveness of the company.
He added: "We cannot increase that offer because we are facing massive overseas competition from low cost economies.
"We are the only manufacturers of our kind in Britain left. But because of these pressure, the business is not making any money at the moment.
"And any further wage increase would not help us compete."