The situation is said to have arisen after the removal of the contract by a major customer, although last year, the company cut staff numbers at its Nottingham factory and closed a site in Trowbridge in 2007.
The company said: "Pork Farms has taken the difficult decision to announce a consultation to reduce the workforce in line with the anticipated reduction in sales.
"Every effort will be made to support our employees through this time and we will offer outplacement support in finding new employment and training opportunities for those affected.
"Pork Farms remains active in pursuing new business opportunities and we believe this decision will help to maintain profitability and secure the future of the site."
Pork Farms produces pork pies, sausage rolls, sliced meat, Scotch eggs and pasties, and has a third site in Market Drayton in Shropshire.