Amount donated: $4.1 million
GE Healthcare employee Mike Kammermeier happened to be in Haiti, training local physicians how to use donated medical equipment, when the earthquake struck.
A day later, he found himself setting up a triage unit in a local church, cleaning wounds and using donated laptop ultrasounds to help trauma patients.
GE posted Kammermeier's story, along with other daily posts about Haiti, on its intranet and offered to match employees' donations 100%. So far, employees have given about $1.4 million; the company's philanthropic arm contributed the rest of the total.
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Last updated February 26 2010: 6:25 PM ET
Source: U.S. Chamber of Commerce