401(k) ‘Moderate Millionaires,’ AI Comes for CEOs and a Workplace Etiquette Quiz | Careers & Leadership for December 7

This is an edition of the WSJ Careers & Leadership newsletter, a weekly digest to help you get ahead and stay informed about careers, business, management and leadership. If you’re not subscribed, sign up here.

In the Workplace

The 401(k) millionaire club is growing. There were 654,000 401(k) millionaires at Fidelity as of the third quarter—the highest level in records going back to the early 2000s. Many are part of a growing group UBS Global Wealth Management dubs “moderate millionaires,” with assets ranging from $1 million to $5 million.