The carmaker said it would make an announcement to employees on Monday regarding its production plans for 2018/19.
It added: “In light of the continuing headwinds impacting the car industry, we are making some adjustments to our production schedules and the level of agency staff.
“We are however continuing to recruit large numbers of highly skilled engineers, graduates and apprentices as we are over-proportionally invest in new products and technologies.
“We also remain committed to our UK plants in which we have invested more than £4bn since 2010 to future proof manufacturing technologies to deliver new models.”
News reports have named the Castle Bromwich and Solihull sites as being set for production cuts. There are 3,200 people employed at the Castle Bromwich site and a further 10,000 at Solihull.
Jaguar Land Rover would not confirm the number of jobs to be lost and said the changes would largely see agency staff not having their contracts renewed.
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It is understood the staff affected are at Solihull, while some staff roles would be moved from Castle Bromwich to Solihull.