On Tuesday, over 1,400 Kellogg Co. cereal plant workers went on strike, aiming to persuade the packaged goods giant to negotiate a "fair contract" for the workers, according to a labour group.

For quite some time, the Froot Loops cereal company has been in talks with union workers about the payment and benefits parameters of a new contract (the old one expired at midnight on Monday).

According to Anthony Shelton, president of the Bakery, Confectionery, Tobacco Workers, and Grain Millers International Union, Kellogg has asked that workers forego adequate health care, retirement benefits, and holiday and vacation compensation.

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Kellogg has threatened to relocate more jobs to Mexico if workers do not accept its plans, according to Shelton.

Kellogg, which makes up roughly a third of its revenue from cereals, boasted that its salary and benefits for cereal plant workers in the United States were among the finest in the business.

"We are disappointed by the union's decision to strike," Kellogg spokesperson Kris Bahner said. "Our offer includes increases in pay and benefits for our employees."

The company also said it was putting in place contingency plans, including internal and third-party personnel, to deal with supply shortages.

Workers in Battle Creek, Michigan, Omaha, Nebraska, Lancaster, Pennsylvania, and Memphis, Tennessee went on strike.