The move from a double to single shift operation is expected to bring about the loss of 158 jobs, with the majority being in labour hire and overseas labour.

A total of 15 local employees will be unemployed once the changes come into effect on February 1.

JBS Australia Director & Head of Corporate and Regulatory Affairs John Berry said the decision was based on the availability and continuity of livestock supply and supported the long term sustainability of the business.

"While the decision will require a reduction in headcount, JBS is committed to the long term future of its Scone operations and has a clear plan around growing opportunities for the brands and products produced at the facility," he said.

JBS also addressed a number of areas of concern in a statement, which included the fact that:

* the previous owners had a second shift when we took over the business in early 2015. We also understand that the previous owners had a second shift running over the past ten years but adjusted product and shifts based on livestock supply;

* this is a commercial decision to consolidate production around a one shift kill and bone operation;

 * since purchasing the Scone business in early 2015, JBS has and continues to, invest capital in areas of operational improvement and address environmental and regulatory issues, which were left unaddressed under previous ownership;

* JBS has a clear plan around growing opportunities for the brands and products produced at Scone.