https://bertschreurs.org/2026/04/10/when-saying-no-with-a-smile-actually-works-top-cited-research-on-humor-and-employee-voice/Bert Schreurs, PhDen2026-04-10T08:48:32+00:00When Saying No With a Smile Actually Works: Top Cited Research on Humor and Employee Voicewriting, leadership, business, books, humor