Callens marks 60 years by honoring its people as "Legends"
09 November 2026
Callens is turning 60, and instead of celebrating the company, it's putting its employees in the spotlight. Known as Calliërs, they've been renamed the "Legends" of Callens' rich history for the occasion. The anniversary year culminated in September with "W. The Legends," an event dedicated to the Legends and to the company's late founder, Willy Callens.
From 'Calliërs' to Legends, during one year
The name "Calliërs" was introduced in 2018, and every employee has worn it with pride ever since. This year, management decided to take that recognition a step further. Annick Callens and Windy Moerman, the second-generation CEOs of the family business, are giving their employees the title of "Legends" for the year.
Calling them Legends was a deliberate choice. They're the ones who helped take this company to the next level.
Windy Moerman
CEO Callens Group
Windy Moerman has been Co-CEO of the Callens Group, together with Annick Callens, since 2003. He grew with the company from within: in the early years he, like Annick, worked his way up through every department to acquaint himself with industrial processes and customer needs.
These days, he translates that broad experience into a distinctly strategic and operational role. Under the impetus of Windy and Annick, Callens grew into Belgium’s market leader. Presently, they are purposefully building on an international future for the Callens Group, with steps into the Netherlands and France for starters.
Windy Moerman believes in entrepreneurship with strong, forward-looking partners. He sees the energy transition as a unique opportunity to guide customers to sustainable, future-proof solutions.
Callens started out as a one-man operation in 1966. Sixty years later, it's a group of companies with 430 employees in Belgium, the Netherlands, and France. In every country, engineers, welders, mechanics, service and maintenance technicians, and administrative staff work together to make life easier for customers and help them turn their ambitions into reality.
In September, Callens celebrated its 60th anniversary internally with all Calliërs, including retired colleagues, because once a 'Calliër', always a 'Calliër'. The event was named "W. The Legends." The "W" stands for "we," as in "We are the legends," and it also pays tribute to Willy Callens, the company's late founder.
My mother, Lena, is still deeply moved. The grandchildren, who may one day become the third generation of the family business, surprised her with a thank-you speech. They all received a standing ovation from the employees.
Annick Callens
CEO Callens Group
Annick Callens is Co-CEO of the Callens Group, a role she shares with her colleague, Windy Moerman. Her entire career has revolved around Callens, the family-owned business her dad, Willy Callens, founded in 1966.
In 1996, she joined the company as a member of staff, in the hope of leading Callens one day. She started in the warehouse and the workshop where she got practical experience in Callens’s core activity. Within a few years, she had worked her way up through every department.
In 2003, Annick Callens and Windy Moerman officially took over the helm from Willy Callens as CEOs and further developed the company into a Belgian market leader.
Annick watches over the core value her dad had always held dear: customer centricity and a people-oriented policy. As custodian of the corporate culture in the long term, she makes sure that every decision harmonizes with the DNA of the Callens Group, with a specific focus on workers’ well-being.
The anniversary comes at a tough time for industry. Economic uncertainty and volatile energy prices are leading more companies to put investments on hold. Even so, Annick Callens and Windy Moerman remain optimistic. Their clear priorities provide stability for both the company and its employees.
In uncertain times, we rely on what has always stood strong: our people. Our Legends. They are the cornerstone of this company, and they always will be.
Windy Moerman
CEO Callens Group
Windy Moerman has been Co-CEO of the Callens Group, together with Annick Callens, since 2003. He grew with the company from within: in the early years he, like Annick, worked his way up through every department to acquaint himself with industrial processes and customer needs.
These days, he translates that broad experience into a distinctly strategic and operational role. Under the impetus of Windy and Annick, Callens grew into Belgium’s market leader. Presently, they are purposefully building on an international future for the Callens Group, with steps into the Netherlands and France for starters.
Windy Moerman believes in entrepreneurship with strong, forward-looking partners. He sees the energy transition as a unique opportunity to guide customers to sustainable, future-proof solutions.
Innovation is one of the strategies that made Callens what it is today, and the CEOs plan to keep investing in it. New technologies are essential for turning instability into an advantage. For example, the company increasingly designs and installs electric boilers and boilers that can run on multiple fuels. They adjust in real time to fuel availability and prices. They're also one of the key technologies Callens uses to guide industry toward a climate-neutral future.
Callens' Department of Technology, based in Waregem, makes innovations like these practical and cost-effective.