700 workers at Fiji's state owned tuna cannery at Levuka may be without jobs in the next three weeks because of a lack of fish.
The Fiji Times reports that the Pacific Fishing Company is already losing 23,000 US dollars a day because it is operating only three days a week instead of five.
The company's chairman, Dhansukh Bhika, says global warming and other climatic changes have caused tuna to migrate south and create a shortage.
He says tuna cannery operations in American Samoa are experiencing the same problems and have been closed for some time.
Mr Bhika says the company's California partner, Bumble Bee Seafoods, is trying to buy tuna from the Indian and Atlantic oceans but this will be costly.