Glacier National Park welcomes volunteers from many countries around the world. However, there are some special requirements for an international (non-U.S. citizen) volunteer. Please read the information at www.nps.gov/oia/topics/ivip/ivip.htm should you wish to volunteer at Glacier National Park.
Xanterra, one of the concessionaires in Glacier National Park, also hires non-U.S. citizens to work in the historic lodges, gift stores, and restaurants. Their website is www.xanterra.com.