Ergonomics is important because... Ergonomics
Ergonomics is important because inadequate ergonomics in the workplace can cause a number of problems. These can manifest themselves on a physical or psychological level. But what are they?
Diseases of the musculoskeletal system
According to a press release from DAK-Gesundheit, musculoskeletal disorders accounted for 20.5% of sick leave in the first half of 2019. A year earlier, it was only 19.6%. This means that the proportion of days lost due to problems in the musculoskeletal system slipped to first place. It is clear that some illnesses can be attributed to inadequate equipment with aids. The correct adjustment of desk furniture at a VDU workstation should be viewed in a similar light.
In which areas must ergonomics be taken into account?
Modern working life is characterized by activities involving objects. These include tools, machines and vehicles. But office objects such as desks, office chairs and computers are also such objects. The special feature of computer and VDU workstations is that both the mechanical objects to be used can be optimally adapted to people and the software, which is not always user-friendly. Consequently, there are two main aspects that need to be considered when assessing workstations.
Hazards to the musculoskeletal system
Humans were not born to sit for long periods of time. They are designed to move. Long periods of sitting are harmful. Standing for long periods is not healthy either. One-sided movements are not healthy either. A classic example of this is mouse arm.
Threats to mental well-being
Incorrect lighting, noise and stress have a long-term negative impact on work performance. This is because sufficient illuminance is important in order to see the work object clearly. Low illuminance is both strenuous for the visual system and a psychological burden. As soon as the high illuminance is concentrated on too small an area, glare can be the result. Glare can not only be caused by direct radiation, but can also be the result of reflections. The annex to the Workplace Ordinance therefore states:
„6.1 Allgemeine Anforderungen an Bildschirmarbeitsplätze - (4) Die Bildschirmgeräte sind so aufzustellen und zu betreiben, dass die Oberflächen frei von störenden Reflexionen und Blendungen sind. (5) Die Arbeitstische oder Arbeitsflächen müssen eine reflexionsarme Oberfläche haben und so auf gestellt werden, dass die Oberflächen bei der Arbeit frei von störenden Reflexionen und Blendungen sind.“
“6.1 General requirements for VDU workstations - (4) Visual display units must be set up and operated in such a way that the surfaces are free from disturbing reflections and glare. (5) The work tables or work surfaces must have a low-reflection surface and be set up in such a way that the surfaces are free of disturbing reflections and glare during work.”
Incidentally, the light spectrum plays the same role as the light intensity.
Ergonomics - where does it say that?
There is no “ergonomics law”! The overriding legal framework is the Workplace Ordinance. It states that workplaces must be adapted to the individual requirements of the persons concerned:
§3 Risk assessment
“When assessing working conditions in accordance with Section 5 of the Occupational Health and Safety Act, the employer must first determine whether employees are or may be exposed to hazards when setting up and operating workplaces. If this is the case, he must assess all possible risks to the safety and health of employees and take into account the effects of the work organization and work processes in the workplace. In the risk assessment, he must take into account the physical and mental stresses and, in the case of VDU workstations, in particular the strain on the eyes or the risk to the employees' eyesight. In accordance with the results of the risk assessment, the employer must specify measures to protect employees in accordance with the provisions of this Ordinance, including its Annex, in line with the state of the art in technology, occupational medicine and hygiene. Other established occupational science findings must be taken into account.”
Occupational medical findings are also important. These include
- State of the art
- Occupational medicine
- Hygiene and
-
Proven occupational science findings.
The annex to the ArbStättV “Requirements and measures for workplaces in accordance with Section 3 (1)” contains a number of points relating to
- ergonomics
- ergonomics:
- 1.2 Dimensions of rooms, air space
- 3.4 Lighting and line of sight
- 6 Measures for the design of VDU workstations
- 6.1 General requirements for VDU workstations
- 6.2 General requirements for screens and display screen equipment
- 6.3 Requirements for display screen equipment and work equipment for stationary use at workstations
- 6.4 Requirements for portable display screen equipment for mobile use at workplaces
- 6.5 Requirements for the user-friendliness of VDU workstations
- ArbStättV at Umwelt-Online
- 1.2 Dimensions of rooms, air space at Umwelt-Online
- 3.4 Lighting and line of sight at Umwelt-Online
- 6 Measures for the design of VDU workstations at Umwelt-Online
- 6.1 Allgemeine Anforderungen an Bildschirmarbeitsplätzen bei Umwelt-Online
- 6.2 General requirements for VDU workstations at Umwelt-Online
- 6.3 Requirements for display screen equipment and work equipment for stationary use at workplaces at Umwelt-Online
- 6.4 Requirements for portable display devices for mobile use at workplaces at Umwelt-Online
- 6.5 Requirements for the user-friendliness of workstations at Umwelt-Online
Ergonomics in the Ordinance on Industrial Safety and Health (Betriebssicherheitsverordnung)
The employer must identify all hazards in the workplace. The Ordinance on Industrial Safety and Health explicitly requires the consideration of suitability for use and safety-relevant interrelationships in relation to ergonomic design. Section 3, section 2 BetrSichV states:
“(2) The assessment shall include all hazards arising from the use of work equipment, namely from
- the work equipment itself
- the working environment and
-
the work objects on which activities with work equipment are carried out.
The following in particular must be taken into account in the risk assessment:
- the suitability for use of work equipment, including ergonomic, age- and age-appropriate design,
- the safety-relevant factors including the ergonomic relationships between the workplace, work equipment, work procedures, work organization, work processes, working hours and work tasks,
- the physical and mental stresses on employees that occur when using work equipment
-
foreseeable operational disruptions and the risks involved in taking measures to eliminate them.”
Work equipment must be usable. Among other things, the requirements for posture, recognizability and the effort required are important. Otherwise, this can lead to work equipment not being used as such.
Act on Equal Opportunities for People with Disabilities (Behindertengleichstellungsgesetz - BGG)
Accessibility means that excessive effort must be excluded for all employees. As a result, all employees should be able to move freely. The legislator therefore defines “barrier-free” in the Act on Equal Opportunities for Persons with Disabilities (Behindertengleichstellungsgesetz - BGG) as follows:
§ 4 „Barrierefreiheit“ BGG - "Barrierefrei sind bauliche und sonstige Anlagen, Verkehrsmittel, technische Gebrauchsgegenstände, Systeme der Informationsverarbeitung, akustische und visuelle Informationsquellen und Kommunikationseinrichtungen sowie andere gestaltete Lebensbereiche, wenn sie für Menschen mit Behinderungen in der allgemein üblichen Weise, ohne besondere Erschwernis und grundsätzlich ohne fremde Hilfe auffindbar, zugänglich und nutzbar sind. Hierbei ist die Nutzung behinderungsbedingt notwendiger Hilfsmittel zulässig.“
§ Section 4 “Accessibility” BGG - “Buildings and other facilities, means of transport, technical commodities, information processing systems, acoustic and visual information sources and communication facilities as well as other designed areas of life are barrier-free if they can be found, accessed and used by people with disabilities in the usual way, without particular difficulty and in principle without outside help. The use of disability-related aids is permitted.”