Verizon Communications Inc. announced wide-ranging layoffs Thursday that will shrink the company’s nonunion workforce by as much as 20%, a major step in a turnaround plan led by new Chief Executive Officer Dan Schulman.

AT&T (NYSE: T) and Verizon (NYSE: VZ) both reported Q3 earnings in late October, revealing two telecom giants moving in sharply different directions. AT&T leaned into its fiber-wireless convergence bet while Verizon signaled an urgent need for transformation.

Verizon is planning to cut about 15,000 jobs, a person familiar with the matter told Reuters on Thursday. The layoffs, the largest ever for the wireless carrier and impacting about 15% of its workforce, are set to take place in the next week, the person said. Verizon did not immediately respond to a Reuters request for comment.