The US internet service provider said the cuts would not affect the company's level of customer service.
"This will be a seamless transition for customers," said EarthLink spokeswoman Carla Shaw.
The decision was aimed at streamlining operations and reducing costs given the difficult economic environment and mounting competition from rival ISPs.
The company reported a 2002 quarterly net loss of $32.9m (£20m) on revenue of $347.9m (£218m). This compares with $73.9m for the quarter a year ago. Cost-cutting measures and increased revenue from high-speed access helped reduce the figure.
EarthLink said the job cuts will trim operational costs and is banking on gaining even more broadband customers by taking advantage of its ability to deploy nationwide DSL, cable and satellite access.