Monsoon Accessorize is reviewing staff hours and contracts as part of a cost cutting programme.
The move from the womenswear and accessories group will affect staff across some of its 363 stores in the UK and Ireland.
The group said it is “working on a number of initiatives to improve the flexibility of [its] stores to ensure staffing matches the flow of customers, with the primary objective to improve service”.
The retailer is reviewing the hours its staff work and is changing staffing cover to “best fit the trading pattern by day and by hour”.
A spokesman for the company said: “We have completed a full review of staffing templates and are now inviting those staff directly affected to enter a period of consultation with the company. The consultation process will allow us to discuss the business proposal relevant to each store and to explain the implications of this change to the individuals affected.
“Whilst we are consulting with most of our staff, the net change in hours is minimal.”
Monsoon Accessorize plunged into the red last year after experiencing what founder Peter Simon described as the “most difficult time” in the retailer’s 40-year history.
The fashion and accessories retailer made a group operating loss of £4m in the year to August 25, 2012, on the back of a £60.1m profit the previous year.