The planemaker will reduce 1,600 positions in the commercial airplanes division through voluntary layoffs, while the rest of the cuts are expected to be completed by leaving open positions unfilled, spokesman Doug Alder said.

“While there is no employment reduction target, the more we can control costs as a whole the less impact there will be to employment,” Alder said.

The job cuts, which will include hundreds at executive and managerial positions, will not done through involuntary layoffs, Alder said.

Boeing (BA) will also cut about 10% of the approximately 5,700 jobs in its test and evaluation division, which conducts flight and lab tests, spokeswoman Sandra Angers told Reuters.

The company had a total of 161,400 employees as of Dec. 31.

Reuters had reported last month that Boeing was considering offering voluntary layoffs to its professional engineers and technical workers.

In February, Ray Conner, chief executive of Boeing’s airplane business, warned employees that job cuts were necessary to “win in the market, fund our growth and operate as a healthy business.”

The Seattle Times had earlier reported that Boeing has taken steps to reduce its workforce.