After last year's holiday hiring frenzy, retailers are showing more restraint in ramping up their staff for the crucial holiday shopping season.
Toys R Us became the latest retailer to announce its seasonal hiring plans on Monday, saying it plans to add 45,000 employees to staff its stores and distribution centers. This is roughly on par with its hiring plans last year.
After a surge in overall holiday hiring last year to a 12-year high, shaky consumer confidence and increased retail efficiency and online shopping may prevent similar gains again, according to an outlook from Challenger, Gray & Christmas released Monday.
"Whether it is related to increased online shopping or the shakiness in consumer confidence, the expectation that there will be fewer people in the stores could prompt some retailers to reduce the number of extra people they will need on the sales floor," said John A. Challenger, the executive outplacement firm's chief executive officer, in a release.
(Read more: Holiday sales forecast moderately higher)
Retailers' increased reliance on big data could also mean slower growth in holiday hires.
Target, which plans to hire about 20 percent fewer seasonal workers, is one such retailer looking to use spending data to adjust its plans.