Yahoo is laying off another 100 to 150 workers, signaling the continued challenges facing the Internet company.

The job cuts made Tuesday represent about 1 percent of Yahoo's work force of roughly 13,500 workers.

The latest payroll reductions come just six weeks after Yahoo laid off 600 workers.

The reasons for Yahoo's cutbacks may become clearer when the company releases its fourth-quarter quarter earnings after the stock market closes Tuesday.

Most analysts expect the results to show meager revenue growth at a time other Internet companies such as Google Inc. and Facebook are thriving.

Yahoo's malaise has intensified the pressure on CEO Carol Bartz to lower expenses to boost earnings.

The cost-cutting strategy has paid off so far. Analysts expect Yahoo's fourth-quarter earnings to more than double.