Habitat for Humanity said in a statement that the 92-year-old Carter was "dehydrated working in the hot sun" at a build site in Winnipeg on Thursday. Carter told Habitat officials he is OK, and encouraged volunteers to keep building.
Carter and his wife, Rosalynn, are in the middle of a weeklong project building houses in various Canadian cities.
News outlets report that firefighters and paramedics arrived at the build site. CBC News reports that Carter was taken to a hospital.
This week's build is the 34th time the Carters have volunteered to build houses for the Atlanta-based charity.
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