While the company did not release a figure, the United Kingdom media, including Reuters, reported that up to 1,000 jobs would be shed and production would be cut at its Solihuall and Castle Bromwich plants.
However, in a JLR statement made on Friday, the manufacturer said: 'In light of the continuing headwinds impacting the auto industry, we are making some adjustments to our production schedules and the level of agency staff.
The company is not renewing the contracts of several agency staff and will be informing staff of plans for the next financial year on Monday.
JLR's decision reflects a wider malaise for the United Kingdom vehicle industry as consumers put off big purchases amid squeezed household budgets and doubts about the economy.
The company sold 614,309 vehicles in the year to 31 March 2018, up 1.7 per cent on 2017.
In January, the firm said it would temporarily reduce production at its northern English vehicle plant in Halewood later this year in response to weakening demand due to Brexit and tax hikes on diesel cars.More news: BBC presenter falls into swimming pool during live TV interview
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The cuts are understood to have been triggered by a 26% drop in JLR sales in the United Kingdom in the first three months of 2018.
The move comes days after JLR reported a rise in sales over the past 12 months, despite weaker conditions in the United Kingdom and Europe. We are however continuing to recruit large numbers of highly skilled engineers, graduates and apprentices as we over-proportionally invest in new products and technologies.
"This is desperately bad news for all those affected and a worrying sign of how the deep uncertainty around Brexit is continuing to damage Britain's economic performance", said Peter Kyle MP, a member of the pro-Remain, Open Britain campaign, condemning the government's decision to rule out single market and customs union membership.
Those cuts were made at its Halewood plant in Merseyside.
JLR said it was fully committed to its United Kingdom factories after investing £4bn in them since 2010.
"It's unfortunate that in the United Kingdom demand is not there anymore, and the United Kingdom is our home market". The Royal College of Physicians has warned bad air quality could be responsible for 40,000 premature deaths a year.