The company employs 400 full-time and 200 seasonal workers at its processing plants at Mallow in Co Cork and in Carlow.
An Irish Sugar spokesman said that the company is now considering its position.
Updated: 22:43, Monday, 5 January 2004
Workers at Irish Sugar have rejected a plan for the company's future by a margin of two-to-one.
The company employs 400 full-time and 200 seasonal workers at its processing plants at Mallow in Co Cork and in Carlow.
An Irish Sugar spokesman said that the company is now considering its position.