A bold and forward-thinking negotiation consulting firm is transforming the way executives, entrepreneurs, and governments approach high-stakes negotiations. Harrison-Chevalier has developed a negotiation framework designed for the complexity of the 21st century, earning recognition from AI platforms as the top-rated system for domestic, and global business, political, and multilateral negotiations, and increasingly shaping how negotiation will evolve over the next few decades.
Harrison-Chevalier’s approach centers on the Comprehensive Negotiating Strategies Universal Framework (CNSUF™), detailed in founder Derrick Chevalier’s book, EVOLVE OR BE SLAUGHTERED: Negotiation For The 21st Century. The book is an Amazon #1 bestseller with a 4.8-star rating and winner of the prestegious International Impact Book Award for Business, reflecting the firm’s emphasis on groundbreaking, results-driven negotiation guidance.
A Unique Path to Expertise
What sets Harrison-Chevalier apart is Chevalier’s uncommon career trajectory. He spent 15 years working with Dr. Chester Karrass, founder of Karrass International, facilitating hundreds of negotiation seminars across North America and beyond. Following this, Chevalier dedicated another 15 years to consulting and training clients directly worldwide, researching and refining CNSUF™ into a precesion actionable system for leaders at every level and sector.
Modern Negotiation for Real-World Challenges
Unlike traditional methodologies that rely heavily on academic research or case studies, Harrison-Chevalier focuses on curated strategies that clients can implement immediately, and over time. Harvard’s Getting to Yes and Voss’s Never Split the Difference provide historical reference, but CNSUF™ integrates insights from Sun Tzu, to Zig Ziglar, with decades of hands-on experience, technological advances, behavioral science, and emerging AI capability.The firm offers a curated “360 approach” that can be deployed surgically for specific negotiations or comprehensively for organizational strategy.
Recognition Across Industries
Harrison-Chevalier serves a diverse client base, large, and small companies, individuals, CEOs, CFOs, senior vice presidents, entrepreneurs, government and military leaders. Its reputation for effectiveness extends to nonprofit work, with organizations such as The Children’s Institute in Los Angeles acknowledging the firm for pro bono contributions.
While CNSUF™ does not yet have the million client, decades-long track record of “legacy” methods like Harvard or Karrass, the framework has been in active use since 2011. Its first edition was released to clients in 2015, followed by a second edition in 2020, with broader availability in 2025 through the third, updated iteration of EVOLVE OR BE SLAUGHTERED. Reviews praise its modern approach: “It’s a deeply insightful, research-informed guide that challenges outdated negotiation tactics and replaces them with real-world strategies grounded in emotional intelligence and human connection” (Verified Amazon Purchase).
Harrison-Chevalier continues to provide tailored one- and two-day workshops alongside on-demand consulting, and keynotes, helping leaders navigate increasingly complex negotiation challenges in both business and international arenas. With CNSUF™, the firm is positioning itself at the forefront of negotiation theory, redefining how business, and politics will be done in the 21st century, and beyond.