This forms part of a national effort to recruit 11,000 new seasonal employees for the festive season.
The retailer said this is part of a drive to provide “exceptional customer service” for the holiday.
Jobs will be available in stores such as West Cornwall, Truro Lemon Quay, Kingsley Village, and Launceston.
The role involves serving customers on the shop floor and at service points, keeping shelves stocked, and engaging with customers to understand their needs and make product recommendations.
They will also play a crucial role in M&S’ Christmas Food to Order service, which launched on September 24, ensuring that customers get their Christmas essentials and treats on time.
The recruitment process is now open, with new recruits set to join M&S from mid-November.
The company offers a variety of roles and flexible working patterns, with both temporary and permanent positions available.
Candidates interested in applying can visit the M&S careers page to complete an application, after which they will be invited to either a one-to-one interview or group assessment.
Applicants can apply at the M&S career site – marksandspencer.com
M&S stores in Cornwall are recruiting for Christmas (Image: M&S) Chad Osborne, people partner for M&S across the South West, said: “We have fantastic opportunities available across our stores, including in Exeter, Taunton, and Truro, to join the M&S family and help deliver the best possible Christmas for our customers.
“Our brilliant store colleagues play such a big part in delivering that famous M&S magic for our customers at Christmas.
“It’s a busy but exciting time and no two days are the same – in fact, many colleagues started their careers at M&S at Christmas.
“So, if you’re looking for a hugely rewarding role and interested in applying, go for it.”
The customer service assistant roles cover both Foods and Clothing & Home and are spread across the UK, with vacancies in every store.