Sears Holdings' Kmart subsidiary is to axe an unspecified number of workers as it revises staff levels at its 1,400 stores, according to press reports.

Associated Press cited spokesman Chris Brathwaite as saying jobs would be added at some stores, and plans would be announced to employees in the next few days but not disclosed publicly.

Brathwaite was reported as saying the changes were not a result of recent financial results, but the outcome of a staffing review.

The company has not indicated how many people may be affected by the lay-offs.

Kmart currently has about 133,000 workers.

Sears said in a recorded message that no information was being provided on the staffing changes.