Presentation of the Board of Directors


Laurent SUBY

TD since 2004, I have experience in the field of industry and construction. Linkedin profile: I am a member of the ATDL board and, since March 2013, President of the association. Education: BTS in Chemistry. Topics of interest: machine safety, psychosocial risks, chemical risk, fire, risks related to construction trades.



Member of the ATDL since 2004, I have been Vice-President since 2017 after having been Treasurer of the association from 2014 to 2017 with a goal of reaching 500 members.

As a worker appointed since 1999 for a well-known Temporary Working Group, I then turned towards the implementation of a MASE Safety Management System until 2008. That year, I joined CBL to set up an OHSAS 18001 and then I passed my C3 Group Designated Worker diploma in 2009.

As an acute industrial tourist, I keep the fifth working working day of the week for my assistance activities to the Designated Worker and the employer under the status of a Self-Employed Person. More humanist than scholastic and empirical than dogmatic. In fact, self-taught and… speaks only French. Why ATDL? The only organization representing Designated Workers! The future of the ATDL! Well, the 500 members as mentioned above, which will allow the establishment of working groups by sector of activity and the exchange of experience and good practices in the field of OHS.

Christophe KRAPP

Since March 2014, I have been a member of the ATDL board and Treasurer since 2019. Education: Subjects of interest: Languages


Member of the ATDL board since 2012, Daniel became its Secretary in 2014 and manages the website and the LinkedIn group. TD since 2002 (certificate reconized at level F), he has more than 20 years of experience in OHS in the chemical industry and in engineering offices after a few years in environmental analysis laboratories and environmental consulting. He is also a sworn expert in Luxembourg on Occupational Safety and Health and Environment and registered as an Intervener in Occupational Risk Prevention (IPRP) in France. Education: Magister of Occupational Hygienist and Environment, Conservatoire National des Arts et Métiers (Paris) after a BTS Biochemist Profile LinkedIn presentation pdf on the LinkedIn group of SSTL
 (Sécurité Santé au Travail Luxembourg) Languages: French, German, English, Luxembourg Subjects of interest: chemical risk, biological risk, fire, explosive atmospheres, emerging risks, psychosocial risks, machine safety, workplace design, effects on health of exposure. 


Since March 2015, I have been a member of the ATDL board. After studying human resources and ergonomics/prevention, my professional career took me to Saint-Gobain’s ductile iron pipe casting and deburring lines, before integrating part of the building sector into a factory manufacturing prestressed concrete elements. My path in prevention and health and safety then took place at the GDL, first at Luxcontrol in 2008, for the constitution of my clients’ Commodo/Incommodo files, and in the advice and support of companies in their preparation for ISO 14001 and OHSAS 18001 certification. Then since 2014, as a designated worker and safety and health referee at TRALUX Construction. Communication, interpersonal skills, observation enable progress to be made in these issues on construction sites. Joining the ATDL Board of Directors and the BUILDING working group is a source of constructive exchanges of good practices in our sectors of activity, but also of analyses of our dangerous, recurrent situations, common to all on the building sites. The ATDL’s objective is to support and guide the country’s designated workers, in all sectors of activity, to carry out their missions as effectively as possible. These missions are also mine: risk analysis, prevention and benevolence to reduce the number and severity of accidents, reduce the number of people exposed to the risk of PD, and improve working conditions. [/su_spoiler

Floriane MAFFEI

Since March 2015, I have been a member of the ATDL board. Education: Subjects of interest: Languages

Andreas WEBER

Since March 2015, I have been a member of the ATDL board and was Vice-President of the association and then Treasurer in 2017-2018. Education: Subjects of interest: Facility management Languages: German, English, Luxembourgish, French. 



A construction engineer, now retired, but still interested in the field of worker safety and well-being, I am a man in the field. More than 40 years of experience in the building industry.

Ability to make decisions, to lead, not shying away from difficulties, very open to discussion when it is constructive. My motto is “Want is power”. I like associations, I was secretary of the ACSSL for more than 20 years, administrator of the ATDL since its creation (more than 10 years) as a volunteer.

I was a building contractor for 10 years and I had a lot of satisfaction in this activity, even if it takes a lot of energy, time and will. I worked as a project manager for construction companies (buildings, VRD, industrial buildings and was safety and health coordinator in the engineering office Schroeder et Associés in Luxembourg for 20 years. I was one of the first coordinators in the Grand Duchy of Luxembourg.


Since 2011, I have been the CEO of a consulting firm, in this position I am responsible for developing the company’s activities in order to be able to offer services related to the prevention of occupational risks (for all business sectors). In general, we make our multidisciplinary skills available to employers and prevention professionals to comply with regulatory requirements in this area. I have been a board member of ATDL since 2010. Languages: French, Spanish, English


Jean-Claude SAGE

Since March 2016, I have been a member of the ATDL board. Education: Subjects of interest: Languages :



I have been an alternate of the ATDL office since March 2016. Health Safety and Designated Worker Coordinator (GDL) since 2004 (on CJ4 with LUX-CEC and on BEI with Argest, now with GERI Management) Municipal Works Manager (B) from 1986 to 1990; 12 years’ experience in SEVESO (Air Liquide) Training site: Diploma of technician in wood construction industry Competence: safety-Building – real estate-environment Language: French (LM)-English (medium)-Spanish (medium)-Luxembourgish (comprehension)-German (basic)




Eric joined the ATDL in 2016. He has been working in Luxembourg since 2009 and has become a trainer for designated workers (up to C4). He has been involved in many European missions in terms of working conditions, health and safety impacts during company or public administration reorganisations. At the same time, he works with many grand-ducal companies to support the implementation of OHS obligations: determination of work units, inventory of risk positions, assessment of professional risks, authorizations, security registers. Since January 2016, he has been a professional risk prevention specialist and a partner of eSST Sàrl. On a daily basis, it develops operational solutions for designated workers that complement the eSST Monitoring tool. Training : – Master 2 IAE de Metz Human Resources Department option “Labour relations, negotiations and organisations” – Work Observation, University of Bordeaux – Master 2 Information and communication of companies and organisations, University of Lorraine

arc georges


Registered as Designated Worker from 2012 to 2017 – Group B and Group C1 to C3. QHSE manager and Administrative Director for 5 years of a construction company. Education: Graduate architect with more than 15 years of experience in all areas of project management and site support.