Celebrating Tom Diersbock: 2025 Outstanding Union Builder of the Year

On Janurary 30, 2025, leaders from across Hawaiʻi’s construction industry gathered to recognize Tom Diersbock, Executive Vice President of Hensel Phelps, as the 2025 Outstanding Union Builder of the Year. The award was presented by the Hawaiʻi Regional Council of Carpenters and Pacific Resource Partnership.

Tom was honored for his leadership, commitment to union values, and dedication to building strong labor partnerships in Hawaiʻi. His work has shaped both Hensel Phelps and the broader union construction community across the islands.

“We’re so grateful for Chad’s time at HPCC and having the opportunity to work alongside such a cool dude like Tom. Well-deserved!!” - Cheriese Flores, President of CKF Industrial Contractors

It was a proud moment to stand alongside a leader who exemplifies collaboration, mentorship, and professionalism.

About Tom Diersbock

Tom Diersbock has spent nearly three decades at Hensel Phelps. Since relocating to Hawaiʻi in 2012, he has led major projects throughout the islands and Guam. As Executive Vice President, he’s recognized for his technical expertise, team-first mindset, and commitment to cultivating a skilled local workforce.

About the Award

The Outstanding Union Builder of the Year award honors individuals who support union labor, local hiring, and workforce training in Hawaiʻi. Presented by HRCC and PRP, it celebrates those who foster strong partnerships between contractors and unions—helping raise industry standards across the state.

Why Union Partnerships Matter

Union collaboration is key to Hawaiʻi’s construction success. It creates safe, high-quality jobs and sustainable career pathways for residents. Leaders like Tom play a critical role in advancing apprenticeship programs and skill development that fuel the future of local labor.

Congratulations, Tom

Tom’s recognition is more than well-earned—it’s inspiring. Congratulations again to a leader making a lasting impact on Hawaiʻi’s construction industry. We’re grateful to have celebrated this milestone with you.