After graduating from high school in 1979 and working for Electrical Corporation of America as a Stockman Driver/Material Warehouseman, Don was accepted into the Electrical Apprenticeship Training Program in 1983. In 1987, he graduated as a Journeyman Wireman. From there he began overseeing projects as a Foreman/General Foreman, working both locally and nationally. After years of estimating and project managing, he and four partners bought Electrical Corporation of America. in 2003. Since then, he has acted as President and CEO of ECA, until its employee lead sale in 2022. Don currently holds Electrical Contractor licenses in 38 states across the US.

Getting involved with organizations has always been a priority of the Laffoon family. Don joined the NECA association in 1999, when he began estimating and project managing. After serving on several committees, he joined the Board of Directors in 2008. Laffoon has been President of the Kansas City Chapter, NECA, as well as Governor. He is the PLC Chairman for NECA District 7, a member of the ELECTRI Council, and has served on the Council on Industrial Relations as well.

Outside of work, Don enjoys family time, swimming, barbecuing, traveling to beaches, and a little bit of golf.