About LDOH

Mission of LDOH

The mission of the Learning and Developing Occupational Health (LDOH) Foundation is to support professionals all over the world through developing and promoting good quality education on Occupational Safety and Health. The final goal is the prevention of losses of lives, health and working capacity of workers, often causing poverty for families and communities. In this effort we want to join other initiatives in the overarching objective of Universal Health Coverage (WHO).

As there is a shortage of well-educated professionals in the world, the foundation wants to contribute in the development and evaluation of new education and training programs and modern learning and information materials and facilities. New IT facilities and social media will give us so far unknown chances. We see it as a challenge to use new online opportunities optimally, often in blended forms: mixed with face-to-face contacts. International and interdisciplinary collaboration in these efforts is a must, given the scarce resources and the common challenges.

Target groups

Our focus is on Occupational Safety and Health experts, and on committed primary and community or public health care professionals and volunteers, and other experts e.g. working in health care institutions, in education, in enterprises or in international organizations. We want to support them and collaborate with them in coping with the huge global need for innovation, good education, training and information in Occupational Safety and Health.

Who are we

The foundation LDOH is an initiative of occupational health experts, who have done occupational health projects all over the world.

What does the Foundation LDOH offer

– The library of education in Occupational Safety and Health

In this library you will find an organized selection of learning materials that are available on the Internet free of charge or for low prices, mostly presented by public or nonprofit organizations.

– Education on Occupational Safety and Health

The foundation delivers train-the-trainers courses and participates in related activities of others. Topics are OSH in agriculture, Primary Health Care related with Basic Occupational Health, finding reliable OSH information online, and occupational and work-related diseases. You can find previous LDOH lectures and workshop materials for free on our website. We invite others to exchange their OSH educational materials with us.

– Books

We offer a free-of-charge digital version of the book “OSH online. How to find reliable information” (English, Spanish and Turkish version). A course for primary health care is in preparation including a digital book on Occupational Safety and Health in Agriculture.

– Consultation and Exchange on Occupational Safety and Health

We are willing to answer questions and to collaborate in OSH education e.g. by exchange of educational materials and disseminating information about future conferences, courses and workshops.

More about the Foundation LDOH

The LDOH is an international foundation, not-for-profit, founded in July 2014. The international experts connected with LDOH have a long tradition of national and international activities in the OH field, working in a wide variety of academic, professional and educational functions. They showed leadership nationally and internationally in research, development, education and information in occupational health. Programs and projects were completed in many countries, mostly working in international teams and often in connection with international organizations such as WHO, ICOH, IOHA, ILO, WONCA, ENETOSH and EASOM.

The LDOH is an official Charity according to Dutch law.

Background of why we do this

Poor working conditions and poor education and information result in high rates of occupational and work-related diseases and injuries, including fatalities, and in low productivity and low work participation rates. This is true both in high and low income countries. Policies and concrete measures should be in place to reduce the risks and to strengthen the human capacities preventing the losses of lives, health and working capacity.

Professional Occupational Safety and Health organizations and activities are needed to support workers, enterprises and communities in the improvement of working conditions and health. Work participation of vulnerable groups such as migrants and people with chronic medical conditions, may need tailor-made professional assistance. However, the large majority of workers and enterprises don’t have professional aid. Appropriate online information and referral facilities for complex cases are often missing. In a number of countries well-educated primary and community health care is providing basic activities for workers’ health. In this way primary health care can make the difference when experts are absent.

As education is essential in capacity building for Occupational Safety and Health, our mission is to support professionals through developing and promoting good quality education on Occupational Safety and Health.

Collaborations and Partners

We cooperate actively with universities, national institutes, R&D institutes, schools for graduate and postgraduate education and continuous professional development education or CME for OSH professionals, professional associations, social security institutions, sector and branch organizations, and social partners. Internationally, we collaborate with WHO, ILO, ICOH, WONCA, EASOM and ENETOSH. Interdisciplinary and international collaboration is not a luxury, it is a must.

Sponsor policy

Sponsor policy has to be developed.


The Foundation LDOH has a written remuneration policy.

You can find the document here: LDOH Remuneration policy 23-2-2017

Annual Financial Report

You can find the documents for the years 2020 and 2019 here:

Annual Financial Report LDOH 2021

Annual Financial Report 2020 LDOH

Annual Financial Report LDOH 2019

Annual Reports

You can find the document for the years 2018-2019 and for the year 2020 here:

LDOH Annual Report 2018-2019

LDOH Annual Report 2020

Foundation LDOH
Learning and Developing of Occupational Health                                                  Nachtegaallaan 15 
2333 XT Leiden

KvK: 60999721
IBAN: NL 34 TRIO 0197960324
VAT: NL85415831B01

We find it important to stay in contact with our customers and anyone who is interested in our work. Feel free to contact us with any questions, suggestions and other queries.

Members of International Advisory Board

Katja Radon

Prof. Dr. Katja Radon, epidemiologist with focus on occupational safety and health and

Claudio Colosio

Department of Health Sciences of the University of Milano. Medical Doctor, specialized in

Roberto Lucchini

Roberto Lucchini 

MD and Professor of Occupational and Preventive Medicine at the University of Brescia,

Rene Mendes

René Mendes

MD, Master and Doctor of Public Health, former Head Professor of Occupational Health

Norbert Wagner

Norbert Wagner

Associate professor, consultant at National University of Singapore, Saw Swee Hock School of

Members of LDOH Board

Teake Pal

Teake (TM) Pal (MD, PhD)

Board member  Occupational physician specialized in clinical occupational medicine and occupational diseases. Areas

LDOH Staff Members

Piet Kroon

Piet (PJ) Kroon (MD)

Occupational physician. Partner in Yellow Factory, director of Yellow Factory Academy. Director Netherlands

Paul (PBA) Smits (MD, PhD)

Occupational physician with national and international experience in undergraduate and postgraduate occupational health

Maarten Verberk

Maarten (M) Verberk (MD, PhD)

Physician, toxicologist, epidemiologist (retired). Experience in occupational toxicology, dermatology, undergraduate and postgraduate occupational

Ad (AACJ) de Rooij (MD)

Occupational Physician specialized in agriculture and cattle-breeding. Working in Stigas, a Dutch bipartite