SEATTLE — Microsoft Corp. said Tuesday it is pulling the trigger on thousands of the 5,000 job cuts it announced in earlier this year.

And in an e-mail to employees, Microsoft Chief Executive Steve Ballmer left the door open to even more cuts.

"As we move forward, we will continue to closely monitor the impact of the economic downturn on the company and if necessary, take further actions on our cost structure including additional job eliminations," he wrote.

When Microsoft announced its first-ever companywide layoffs in late January, the software maker immediately cut 1,400 positions, with the remaining 3,600 cuts to come over an 18-month period.

After making the cuts disclosed Tuesday, the software maker said it will be almost finished with the 5,000 layoffs.

Microsoft said the affected workers are split between the U.S. and other countries.

The company said laid-off employees will be given severance packages, and that it expects some will be rehired as part of the 2,000 to 3,000 new jobs Microsoft is creating between now and the middle of 2010.

Shares of Microsoft slipped 40 cents to close at $19.79.

WAYNE, Mich. — Ford Motor Co. says it will spend $550 million to convert its old Michigan Truck Plant into a facility that will build small compact modern cars.The retooled facility, which once built sport utility vehicles like the Lincoln Navigator, will now build Ford's next-generation Focus, expected to roll off the line next year.The plant will also build a new battery-electric version of the Focus for the North American market.