Nimble Solutions for Niche Needs.™ GuideOne National, an Excess & Surplus carrier, is committed to serving four key industry verticals: Infrastructure & Rail, Construction, Technical Property, and Energy & Mining. We are guided by our mission and our promise — We Help Make Positive Change Possible® — by protecting the people who strengthen and support our communities. Our technical underwriting expertise and extraordinary distribution partners help us deliver excellent service and results for our customers. Contact us to learn more.