Sources tell TechFlash that Microsoft (MSFT) will make additional job reductions this week–beginning as early as today. Cuts are expected to number in the hundreds–smaller than those made in January and May, but ugly just the same.

“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,” Ballmer said in May. Given that Microsoft posted declines in revenue and profits in its latest quarter, I suppose this week’s rumored “action” was inevitable.

UPDATE: Cuts are indeed being made today–800 of them. Here’s the official word from Microsoft:

“Earlier this year, we announced that in order to reduce costs, increase efficiency and prioritize our focus areas, we would eliminate approximately 5,000 positions by June 2010. Today, we are eliminating around 800 positions spread across multiple businesses and locations and have completed our reduction plan sooner than we had anticipated 11 months ago. At the same time, we continue to hire in priority areas, but also understand that continuing to manage our businesses closely, as we always do, can mean additional headcount adjustments.”

As Todd Bishop at TechFlash notes, Microsoft (MSFT) previously cut 1,400 jobs, and hadn’t actually committed to the 5,000 number.

But the company just posted a miserable quarterly-earnings report, and company executives spent most of the ensuing conference call warning investors that things look dire.

Here’s Ballmer’s memo to the troops:

From: Steve Ballmer
Sent: Tuesday, May 05, 2009 5:43 AM
To: Microsoft – All Employees (QBDG)
Subject: Update: Realigning Resources and Reducing Costs

In January, in response to the global economic downturn, I announced our plan to adjust the company’s cost structure through spending reductions and job eliminations. Today, we are implementing the second phase of this plan.

This is difficult news to share. Because our success at Microsoft has always been the direct result of the talent, hard work, and commitment of our people, eliminating positions is hard.

Today’s action includes positions in the United States and in a number of countries around the world. In the U.S., affected employees will be notified directly by their managers today. In other countries, local leadership teams will provide more specific information about the impact to their organizations.

With this announcement, we are mostly but not all done with the planned 5,000 job eliminations by June 2010. We are moving quickly to reach this target in response to consistent feedback from our people and business groups that it’s important to make decisions and reduce uncertainty for employees as quickly as possible, and so that organizations can concentrate their efforts and resources on strategic objectives.

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.

For those of you directly affected by today’s announcement, I want to thank you for your contribution to Microsoft and assure you that we will continue to provide support as we did during the previous job eliminations.

And for everyone across the company, I want to reemphasize how much I appreciate the way you have pulled together to help the company respond to this difficult economic environment. There’s no doubt that these are very challenging times. But together, we are making the right choices to ensure that we will continue to deliver great products and position ourselves for strong future growth and profitability.

Thank you for your continued hard work, commitment, and focus.

Steve