About 20 food manufacturing workers at the McCain Foods, Hastings plant are expected to lose their jobs.
Service and Food Workers Union (SFWU) organiser Thomas O'Neill said the plant announced to workers yesterday a proposal to reduce year-round production of TV dinners to just 10 days per year.
22 jobs would be lost, Mr O'Neill said.
McCain's intended to stop exporting to Australia and manufacture the products solely for the domestic market.
Workers received letters citing the high dollar as the reason for the job losses.