Millennial bosses face the challenge of weighing their corporate conditioning against more progressive ideals.Courtesy of Luis Alvarez/Getty ImagesBusiness Insider spoke to Gen Z workers and millennial managers about how they approach work.The Gen Z workers challenged the 9-to-5 work hours, hustle culture, and strict dress codes.Two millennial managers are learning from Gen Z's focus on work-life balance and self-expression.Gen Z, a generation born between 1997 and 2012, continues to challenge the workplace status quo and rewrite the narrative of professionalism."Hustle culture" is being replaced with work-life balance, emotions are edging their way into corporate conversations, and business casual is a distant memory.