Training and Coaching

Amsterdam, Noord-Holland


About OpenBook.Works

OpenBook.Works was established to help companies implement the open-book management practices outlined in the book "De Kracht van OpenBook Management".

Originally established to handle a high-demand for company tours and visits after the book’s release, OpenBook.Works is now the largest and most well-known resource for Open-Book Management training and education.

OpenBook.Works provides expert training and coaching services for companies interested in implementing the concepts of transparency and Open-Book Management in their organization.

Duncan Oyevaar, Open Book Works; “we want to be part and contribute to the B Corp community because with our proven approach to transparency, employee education and engagement; we guarantee that organizations will improve their overall results in a sustainable way, and at the same time improve the lives of the people who drive those results. Creating sustainable value in line with the values of B Corp”.

The Change We Seek®

Open Book Management is a whole different approach of running a business. Their approach to running a company was developed to help close one of the biggest gaps in business: the gap between managers and employees. They call their open-book approach OpenBook.Works. What lies at the heart of Open Book Management is a very simple proposition: The best, most efficient and most profitable way to operate a business is to give everybody in the company the opportunity to contribute to the existence of company based on transparency and trust.

What makes us a better company?

B Impact Report

Certified since: 

December 2014

Company Score

Median Score*



The Environment section of the Assessment evaluates a company's environmental performance through its facilities; materials, resource, and energy use; and emissions. Where applicable, it also considers a company's transportation/distribution channels and environmental impact of its supply chain. This section also measures whether a company's products or services are designed to solve an environmental issue, including products that aid in the provision of renewable energy, conserve resources, reduce waste, promote land/wildlife conservation, prevent toxic/hazardous substance or pollution, or educate, measure, or consult to solve environmental problems.



The Worker section of the survey assesses the company's relationship with its workforce. This section measures how the company treats its workers through compensation, benefits, training, and ownership opportunities provided to workers. It also focuses on the overall work environment within the company through management/worker communication, job flexibility and corporate culture, and worker health and safety practices.



The Customers section of the Assessment measures the impact a company has on its customers. The section focuses on whether a company sells products or services that promote public benefit, and if those products/services are targeted towards serving underserved populations. Questions in this section will measure whether a company's product or service is designed to solve a social or environmental issue (e.g. improves health, preserves environment or creates economic opportunity to individuals or communities, promotes the arts/sciences, or increases the flow of capital to purpose-driven enterprises).



The Community section of the survey assesses a company's impact on its community. The Community section evaluates a company's supplier relations, diversity, and involvement in the local community. The section also measures the company's practices and policies around community service and charitable giving. In addition, this section includes if a company's product or service is designed to solve a social issue, including access to basic services, health, education, economic opportunity, arts, and increasing the flow of capital to purpose-driven enterprises.



The Governance section of the Assessment evaluates a company's accountability and transparency. The section focuses on the company's mission, stakeholder engagement, and overall transparency of the company's practices and policies.

Overall B Score

80 out of 200 is eligible for certification

*Of all businesses that have completed the B Impact Assessment

*Median scores will not add up to overall

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