Who is Stefanie Costi?

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Stefanie Costi: calling out toxic workplaces, one sign at a time

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Stefanie Costi doesn’t sugarcoat workplace culture. She calls it out directly, honestly, and with a style that makes people stop scrolling. Her sharp mix of legal expertise and relatable storytelling has positioned her as a leading voice on employment law, workplace bullying, and corporate accountability. With posts that rack up hundreds of thousands of views, Stefanie has become the lawyer-turned-advocate who actually speaks the language of workers.

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1. Who she is

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Stefanie is an employment lawyer and workplace advocate from Australia. With years of experience in legal practice, she’s built her reputation on addressing some of the most pressing issues in modern workplaces, from toxic bosses to systemic bullying. She has turned her legal background into a platform for advocacy, translating complex workplace dynamics into content that resonates widely. Beyond law, Stefanie is also a TEDx speaker and educator, sharing strategies to make work environments safer and fairer. By bridging her professional expertise with personal storytelling, she has become a trusted guide for employees navigating hostile work cultures.

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2. A network of heavyweights

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Her influence extends beyond social media. Stefanie is connected with respected institutions like LinkedIn, Business Insider, and The Australian Women’s Weekly. She’s been featured in outlets that shape workplace discourse and collaborates with platforms like Bixie and Leaders in Workplaces, amplifying her message globally. This network of brands, media, and thought leaders strengthens her credibility and gives her content broader impact.

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3. Why people listen

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People engage with Stefanie because she doesn’t hide behind jargon. She communicates in plain language, often holding up a handwritten sign with a blunt truth that cuts to the core of workplace realities. Her tone is both empathetic and firm, striking a balance between support and authority. This approach allows her to speak directly to those experiencing toxic work environments while also challenging employers to reflect and change.

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4. Authenticity that resonates

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With an Authenticity Score of 92/100, Stefanie’s presence feels genuine and unfiltered. She shares real legal insights alongside human stories, often framed in a way that feels personal and direct. Posts like “Top performers are prime targets for workplace bullies” or “Exclusion at work is bullying done silently” highlight her ability to pair expertise with relatability. The result is content that feels both credible and human, a rare balance that keeps her audience coming back.

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5. Numbers that back it up

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Her following has grown organically from 80K to 134K without suspicious spikes, clustering mainly in Australia where her legal advocacy is most relevant. Posts regularly attract thousands of likes and hundreds of comments, with TikTok and LinkedIn being her strongest platforms. Ranked #9 on LinkedIn Australia and #35 worldwide in Workplace Well-being, Stefanie’s influence is as measurable as it is visible. Engagement remains consistently strong, with comments that go beyond praise to share real stories and workplace struggles.

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6. Collaborations that matter

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Stefanie’s work has caught the attention of major outlets and organizations. She has been featured in Business Insider, The Australian Women’s Weekly, and other prominent publications, where her expertise adds weight to broader discussions about workplace culture. Her collaborations with platforms like Bixie and LinkedIn reinforce her status as both a legal authority and an accessible advocate for workplace change.

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7. Why brands should partner with her

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For brands, Stefanie offers both authority and relatability. She is the kind of voice people trust when conversations get tough — and that makes her an ideal partner.

• Thought leadership campaigns on workplace culture and employee advocacy

• Speaking engagements at corporate events, panels, or workshops on workplace well-being

• Co-created content tackling HR, leadership, and organizational culture

• Validation of tools, services, or products designed to improve employee experience

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8. What causes she defends

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Stefanie is a strong advocate for education for everyone, emphasizing how knowledge and awareness are key to dismantling toxic structures at work. Her approach is rooted in accessibility, breaking down legal and organizational concepts so that everyday employees can understand and use them. Whether it’s through LinkedIn posts, TikTok videos, or her public speaking, she consistently highlights the need for fair and inclusive workplaces where everyone, regardless of background, has the tools to protect themselves.

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9. why she's relevant in 2025

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As workplace culture undergoes massive shifts, including hybrid work, AI-driven HR systems, and growing conversations about mental health, Stefanie’s voice is more relevant than ever. Employees are demanding transparency and accountability, and Stefanie’s content cuts straight to those needs. She translates legal expertise into digestible advice that empowers individuals in an economy where work-life boundaries and fairness are being redefined.

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Conclusion: A voice for workplace justice

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Stefanie Costi stands out because she doesn’t just analyze workplace culture. She humanizes it. Her mix of law, advocacy, and relatable content creates a blueprint for how professionals can use their expertise to spark cultural change. As toxic workplaces continue to dominate headlines, Stefanie’s voice will remain a trusted guide for those navigating these challenges. In 2025, she isn’t just relevant. She’s essential.

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