Marketing Most stressed-out generations in America: Millennials and Gen X Work issues, money concerns, and job instability are keeping those under 50 awake at night. By Kevin Allen@kevin_j_allenDec. 27, 2013 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.