Fruit juice expert Thiel: Transparency trumps the deadly sins of leadership

Dörte Thiel, an expert in corporate communication, fruit processing and analytics from Duisburg (Germany), captivated the audience at the 9th International Speaker Slam in Wiesbaden (Germany) on September 12, 2025. In front of around 150 participants from 22 nations, she presented her expertise on corporate development and compellingly highlighted the numerous advantages of transparent communication as a key to success, especially for small and medium-sized enterprises (SMEs).

Thiel, the winner of the 9th International Speaker Slam amidst thunderous applause, posed the question of who the leaders in the fruit juice industry are. Her answer: mostly specialists who were promoted, independent business owners, or their partners and heirs. She illustrated that many are unaware of the “7 deadly sins of leadership” and often underestimate the immense thrust that innovative corporate governance through transparent communication can provide.

In her speech, Thiel emphasised the positive effects of transparency on employee performance and willingness, personnel costs, and profit growth. When people are involved in decisions and know the shared company goals, they are often more motivated, focused, and healthier. She argued that a company only functions optimally when all its “cogs” mesh together seamlessly. “A company works like clockwork; no matter how small or large a cog is, if they don’t mesh smoothly, the system doesn’t function,” said Thiel.

The expert, who has been active in industry and commerce for over 30 years, including more than 20 years in the fruit juice industry, supported her theses with practical examples from her extensive experience. She supports companies worldwide across the entire supply chain – from the farmer to the processing plant and through to the manufacturing of the final product – and knows the challenges facing SMEs.

Thiel made it clear that transparent communication not only improves the working atmosphere but also boosts innovation and competitiveness. She called on leaders to actively involve their employees in decision-making processes and to establish an open feedback culture. Only in this way, she argued, can the full potential of the workforce be realised.
With her innovative, all-round consulting approach, backed by a success guarantee, Dörte Thiel supports companies in optimising their internal communication and leaving the “deadly sins of leadership” behind. Her victory at the International Speaker Slam impressively confirmed her expertise and her ability to communicate complex topics in an understandable and inspiring manner.