Chase Bank notified 730 employees at its Rancho Bernardo mortgage servicing office that it’s cutting all positions there as part of a companywide restructuring that will eliminate about 15,000 jobs.

“During the downturn, Chase ramped up its staff to work with a lot of borrowers who were struggling to make their monthly payments,” Chase spokeswoman Suzanne Ryan said. “Fewer homeowners are struggling with their mortgages, and many people have already refinanced, taking advantage of the stronger economy and historically low rates.”

Ryan said Chase has a talent reassignment program that will attempt to place many of the workers in jobs within the bank or in positions at other companies. The program involves job counseling and job fairs.

The earliest layoffs won’t happen in San Diego for 90 days, and some workers may be able to stay for a year because that is when Chase’s lease at 10790 Rancho Bernardo Road ends, Ryan said.

Currently, Chase has about 700 job openings in California. In all, Chase laid off 1,300 people in the state.

New York City-based Chase has more than 20,000 employees in California, including about 11,000 in Southern California.

The bank has 99 retail branches in San Diego County. Chase acquired Washington Mutual Bank, the largest bank failure in U.S. history in 2008 for $1.9 billion.

—Mike Allen