Food producer Northern Foods has pledged a £50 million boost for its pension fund saying the market for its products remained "very competitive".
The group will make the payments over the next 15 months in order to fill a deficit that stood at £220 million at the end of March last year.
Hull-based Northern, which makes Dalepak frozen foods, Goodfella's pizzas and Fox's biscuits, said the existing final salary scheme, which has 8,000 active members and 5,500 pensioners, would now be closed to new entrants.
The update on the pension scheme came as Northern said it had been performing in line with expectations since a trading update in January. It still expects profits before exceptional items to be in the region of £80 million in the year to March 31, compared with £86 million reported last time.
In January the company has warned that its profits would be hit by poor sales to Marks & Spencer over Christmas.
M&S makes up approximately one-third of Northern's business.
In a brief statement, the company said: "The market remains very competitive, but we are continuing to make good progress with our efficiency and restructuring programmes."
Other Northern customers include Tesco, Asda, Sainsbury's and Morrisons.
Northern has also been undergoing a restructuring that has included the planned shutdown of two pastry plants at Evesham and Carlisle, with the loss of 1,060 jobs.
It has also made losses after goodwill on the sale of businesses such as the Eden Vale Minsterley fresh chilled dairy products operation in Shropshire.
Northern has been reshaping itself under new chief executive Pat O'Driscoll.