Free Microsoft Word Templates for Business

They sell a lot of templates but also have a few freebies. The free receipt template is in Word format. Other free templates are in Excel format.

From Microsoft Mactopia, a small collection of Microsoft Word 2004 templates for stationery or letterhead.

They offer a large variety of business templates for newsletters, brochures, business cards, and other business documents for sale. You can download a free sample as well as preview PDFs of all their templates. They offer templates for many programs including Microsoft Word.