SAN FRANCISCO — Yahoo is preparing to lay off between 600 and 700 workers in the latest shake-up triggered by the Internet company’s lackluster growth.

Employees could be notified of the job cuts as early as today, according to a person familiar with Yahoo’s plans. The person asked for anonymity because Yahoo hadn’t made a formal announcement.

The planned cutbacks represent about 5 percent of Yahoo’s work force of 14,100 employees. It will mark Yahoo’s fourth mass layoff in the past three years.

The latest two housecleanings have come under the company’s current CEO, Carol Bartz, a Silicon Valley veteran hired nearly two years ago, despite a lack of experience on the Web or in advertising — Yahoo’s main source of revenue.

This week’s round of reductions is expected to be concentrated in Yahoo’s U.S. products group, which already has been undergoing an overhaul since Bartz hired former Microsoft executive Blake Irving to run the division last spring.

The company’s revenue had edged up by less than 2 percent to $4.8 billion through the first nine months of the year, reflecting the difficulty Yahoo has had selling ads while other Internet companies such as Google and Facebook are thriving.