Staff working at a supermarket's stores in Burton and Uttoxeter have avoided going under consultation as changes to shopping habits have led to jobs at under-performing stores being under threat.
Asda have put workers' jobs at 18 stores across the UK under consultation over changes to working hours and staffing levels.
No figures have been released for the number of possible redundancies and no UK store closures are planned.
Staffing arrangements at 59 other Asda stores are also under review as a result of differing shopping habits related to self-scanning checkouts and online ordering. The petrol station in Woodville is also not under consultation as well as Burton and Uttoxeter.
The GMB union is in talks with the retailer over its plans to cut costs at under-performing stores. According to reports, a total of 3,257 employees are involved in the consultation process across the 18 outlets.
An Asda spokesman said: "We are currently in discussions with a number of our stores about changes that are needed to the number of hours required to run that store for our customers.
"It is common practice for a supermarket to need to make changes to hours based on the changing shopping habits of customers, and, as ever, we'll work with our colleagues to try to find the right way to ensure we have the right people in the right place at the right time for our customers.
"We understand that any conversations about change are unsettling but it is always our utmost priority to find alternative roles or working patterns for impacted colleagues."
Gary Carter, national officer of the GMB union, said: "GMB is in consultation with Asda over the situation and is currently in discussion with senior management."
Asda employs 165,000 workers in 645 stores and has been owned by American retail giant Walmart since 1999.
The stores where staff are under consultation are: Arnold, Boston, Broadstairs, Burnden Park, Crewe, Basildon, Eastgate, Eastleigh, Halifax, Harpurhey, Mansfield, Minworth, Norwich (Old Store), Oadby, Radcliffe, Sinfin, Spennymoor, Thurmaston and West Bridgford.