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Engineering » Industrial Engineering and Management » "Occupational Health", book edited by Orhan Korhan, ISBN 978-953-51-2890-8, Print ISBN 978-953-51-2889-2, Published: February 1, 2017 under CC BY 3.0 license. © The Author(s).

Chapter 4

HSE Management for a Sound Work Environment: Strategies for Improving Health Safety and Environmental Indicators through Ergonomic Design Thinking

By Marcello Silva e Santos, Maria da Conceição Vinciprova Fonseca, Marcelo Marcio Soares, Bernardo Bastos da Fonseca, Maria Victoria Cabrera Aguilera and Ananda Halfeld Alves Fernandes
DOI: 10.5772/66650

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General EDT model.
Figure  1. General EDT model.
Distribution of greenhouse gas emissions in Canada.
Figure  2. Distribution of greenhouse gas emissions in Canada.
Foundation pouring.
Figure  3. Foundation pouring.
Vibration of concrete mix.
Figure  4. Vibration of concrete mix.
Concrete waste.
Figure  5. Concrete waste.
Wood waste.
Figure  6. Wood waste.
Tube underpinnings concrete pouring checklist.
Figure  7. Tube underpinnings concrete pouring checklist.
Occupational severity levels.
Table 4. Occupational severity levels.
Sum of critical index for one particular workstation.
Table 5. Sum of critical index for one particular workstation.
Overall severity levels for the work environment.
Figure  8. Overall severity levels for the work environment.
HSE best practices banner.
Figure  9. HSE best practices banner.

HSE Management for a Sound Work Environment: Strategies for Improving Health Safety and Environmental Indicators through Ergonomic Design Thinking

Marcello Silva e Santos1, Maria da Conceição Vinciprova Fonseca2, Marcelo Marcio Soares3, Bernardo Bastos da Fonseca4, Maria Victoria Cabrera Aguilera4 and Ananda Halfeld Alves Fernandes5
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Ergonomic Design Thinking (EDT) is a project management methodology that takes advantage of two important concepts or themes in carrying out project actions. The first is Design Thinking itself, a project management approach originally proposed by Tim Brown, who knew beforehand the full potential of design tools, techniques and maybe we should add idiosyncrasies. Designers have “their own way” of following through and carrying out issues such as deadlines and sequences, for example. This logic is similar to another important theme: ergonomics. The main objective of ergonomics is adapting work systems to workers themselves. By doing so, its professionals dig deep into the social technical fabric of a workplace and use recurrent and iterative strategies in order to search for a perfect fit for a given workstation. EDT as a modeling guide for workspace projects have been used in Brazil for quite some time. This text outlines an interesting experience in which EDT was used as a conception tool in building a new health safety and environmental (HSE) management system model for construction sites. A real case–an ongoing construction work–was used to contextualize the experiment and better define the various instruments of this HSE model. Due to the work environment and predominant job characteristics available, the EDT approach did quite well in terms of serving its project management purpose, as it was confirmed when the new system became fully functional.

Keywords: ergonomics, health, safety and environmental, management systems

1. Introduction

Ergonomic Design Thinking (EDT) was originally conceived as a project management model used for both organizational design and project management. Thus, it must be understood as an effective tool for project management optimization in general applications, not only design projects. The main idea is the general concept that makes possible the application of creative reasoning and intensive end-user participation in the course of project management just like designers do when solving problems in their during the creative work process. Conventional planning and decision making methods flow in a linear manner, way different from creative thinking. “HSE,” short for health safety and environmental management is a fairly new–and crucial–area in operations management [1], especially for those organizations that fall in the category of complex systems, which require a 360° approach to operations management. HSE decision analysis in such environments is definitely a challenge, since prioritizing becomes difficult due to multiple criteria to assess, risks to ponder and level of severity in terms of collective impact and workstation evaluation.

This chapter outlines the general model for carrying out HSE project management approaches in the workplace. In practical terms, it adds up to existing management systems that are designed to comply with industry and government standards. In order to contextualize the theoretical framework, a case study is employed as a guide for the implementation of a specific HSE Management system for the construction industry. In order to achieve that, the work team used a set of strategies set forth by the EDT modeling, as proposed by Santos and Soares [2]. The choice of this industry segment is due to the fact this particular sector is known by the lack of qualification of its workers. As a consequence, it is acknowledged worldwide as a low performance sector in terms of controlling its operational and environmental risks and hazards.

The EDT approach used in the course of the process being described in here was carried out to help the consolidation of a HSE management system for building construction sites. Thus, the complex nature of the work process is dictated not by its operational characteristics or the usual determinants of larger complex systems (i.e., oil refineries, nuclear power plants, medical emergency rooms, construction sites), but because of the difficulties posed by management issues, such as control and enforcement of safety and health practices in this type of work. The building and construction industry struggles to set up and maintain effective action plans and indicators when it comes to health safety and environmental processes, commonly referred to as HSE. In fact, its workers ranks the second most exposed to work accidents of all industrial segments in Brazil [3], just behind the transportation sector.

The consequence of poor control and management of HSE in construction sites leads to a series of problems ranging from plain inconvenience of mishandling or misinterpretation of data to more serious ones such as poor HSE plans and management systems. The end result of this is converted into an unpleasant workplace, health and safety issues and all sorts of environmental problems. Without the continuous optimization of HSE processes, it becomes virtually impossible to positively improve the work conditions for the workers and all those directly or indirectly affected by the outcomes of bad planning, poor management and actual operational actions. The EDT methodology provides the “real work element” for such continuous improvement since it is more palatable and credible for containing and merging the expectations of the workers with the needs of the productive process.

2. Theoretical framework

The concept of EDT derives from the general Design Thinking concept, originally proposed by Brown [4], who defined it as “a discipline that uses the designer’s sensibility and methods to match people’s needs with what is technologically feasible and what a viable business strategy can convert into customer value and market opportunity.” However, the concept has proven to adhere well beyond the design and marketing spectrum. Likewise, ergonomics is not only a tool for improving work conditions but also an effective way for a better design of products and for bringing productivity, therefore economic advantage, for the organizations [5, 6].

The idea behind Design Thinking has been the appropriation of creative thinking and intuitive response actions involved in the design process in a wider range of situations, outside the Design field. With that in mind, Santos and Soares [2], proposed a combination of the Design Thinking “creative based process management” and Ergonomics for Project Management processes in which the interaction between users and those in charge of designing work environments or systems is key to an overall conformity to job design principles and user needs, as well as to the compliance to normative standards and labor legislation (Figure 1).


Figure  1.

General EDT model.

The concept of Ergonomic Design Thinking, hereafter called by its acronym EDT, adheres to the notion of employing formal creative thinking built from within the spectrum of real work actors. Santos et al. [7] points out that nobody knows better about the job than workers themselves. Therefore, it would seem counterproductive not to take in consideration their insights when trying to improve their work conditions, workstations or work systems. Thus, Ergonomic Design Thinking must be seen as a general model for participatory actions in the workplace, which in turns make areas such as Ergonomic Design, product development and, definitely, job design all possible terrain for its dissemination.

All those actions demand sequential steps somewhat flexible to allow creative thinking to flourish. In fact, the model started to be used in setting up HSE management systems in a variety of organizations. Health, safety and even environmental processes are all connected to an important participatory demarche in operational work activities. They should not be dealt with in an insulated manner, without proper integration. Our lives and our health can be affected by poor design choices [8]. By inference, this is true for HSE interventions. Regardless all constraints that may arise in workplace, engineers are mostly responsible for all work environment inadequacies. It is fair to say that companies intuitively use Design Thinking to an extent, even without realizing it. However, organizations resist in taking a human-centered approach because they cannot grasp at the perspective of trying something entirely new. Something that arises out of their control, in the midst of a balance of users’ needs, technology and organizational constraints.

The building construction industry is characterized by particularities not present in any other industry. First off, it is entirely a project driven industry, no “final product” is ever alike, due to geographic and geological variations and differences in systems and components (building materials and techniques). Contrary to regular transformation industry, storage and logistics is not a major direct problem, but quality control is as important as in regular manufacturing. Then, we have the construction site issue. It functions as a temporary factory, one in which often times workers share not only tasks but also sleeping rooms with fellow workers. Yet, there is no true attachment to the workplace. It will be used and discharged at the end of every project.

Likewise, teams are not permanent, rarely replicated in the next construction projects. For instance, if a work activity is identified as critical under HSE standpoint, a training program is immediately implemented. However, those trainees will hardly experiment the same constraints in their next construction project. In fact, sometimes they may be even out of the industry all together, since the Building Construction Industry (BCI) is also characterized as a temporary job for many people, employing large amounts of unskilled workers. In order to be successful, a HSE qualification program must take in consideration all of these issues and address them properly. HSE plans and systems need to be pragmatic, safety driven and easily assimilated by everyone. Although every construction site has its own characteristics, it is possible to establish a replicable model that could pass on the essence of prevalent work characteristics that are present in such work environments.

Brazilian Standard NBR 12284 [9] defines a construction site as “a set of areas destined to the execution and support of construction industry Works, divided in operational and living areas.” In other words, it is the entire portion of land in which a construction plan will be materialized, plus the storage areas, equipment and machines (concrete mixers, cutters, welding pits, etc.) and also sleeping barracks, restrooms and lunchrooms for the workers. They are inherently hazardous places to work and to “live” and often times workers have no choice but to stay overnight since construction works and construction sites may be located in remote areas.

The risk of developing musculoskeletal disorders is very high because in most cases there is no possibility of mechanical material handling. Besides heavy lifting, workers are often exposed to awkward postures, making the BCI the leading industry in ergonomics-related risks and impacts [10]. This is all aggravated by heat stress (especially in some states) and other environmental hazards. Making matters worse, the exposure to job design constraints, issues such as lack of job security and crew rotation, increases the chances of accidents and infirmities [11].

In places with a strong public welfare system, occupational data and epidemiological statistics are usually more precise and credible than in wealthier nations in where private modalities of welfare are more common. In Brazil, the National Institute for Social Security needs a robust database to be able to control multiple benefits it manages, from retirement pensions to temporary disability payments, including indemnity for work accidents and work-related illnesses and disorders. The system operates in an intricate network of information, trying to avoid errors and frauds by individuals and companies, since resources are becoming gradually scarce as population grows older and people live longer.

The cost of liability insurance for example is not a flat rate for generic or specific business categories. It is based on each tax identification number, so that companies with poor occupational health and safety indicators will pay gradually more if they keep neglecting this particular issue. In fact, there is a curiosity that comes from epidemiological data in places with more harsh labor and welfare legislation. More precise data in occupational health and safety data lead to a false perception of low standards. Because it tends to increase reporting of the negative outcomes of HSE management systems, it ends up making them look ineffective when compared to other countries. Often times, countries that are known for having poor health and safety standards may look better in some of those standards. It happens because reporting of occupational health and work accidents in those countries are also very poor.

Table 1 contains data extracted and combined from various Brazilian government agencies [12, 13], and illustrates epidemiology severity data for the BCI, in terms of frequency.

Number of work related accidents in Brazil

Table  1.

Number of work related accidents in Brazil.

According to the social security annual statistics report [13], the impact in terms of occupational health and safety figures is exponentially more relevant once the data are further detailed. Out of more than 700.000 work-related accidents, about 121.000 of those involved victims under 29 years old and the building and construction industry is responsible by nearly one third of those figures. Soares [14] sums up the economic impact of work accidents saying that social security agencies alone spends around US$ 1 billion in wages, benefits and other expenditures, whereas the private sector spends another US$ four to five billion due to poor work conditions.

By looking at the data in Table 1, it is tempting to infer that the decrease in the number of fatalities and illnesses–despite an increase in number of accidents–is due to the improvement of work conditions and incentives in preventive measures, such as the use of personal protective equipment (PPE) and collective protective systems. However, it is fair to say there has been an overall raise in awareness by workers and consciousness by organizations to employ systematic measures for the improvement of work conditions as a whole, which includes some human factors and ergonomics actions. Another Brazilian government-funded agency, SESI [15], points out a list of prevailing occupational illnesses and injuries in the building construction industry. Table 2 lists the main causes and preventive measures for each one of those work hazards.

Main occupational illnesses in the building construction industry

Occupational illnessesCausesPreventive measures
Hearing lossLong exposure to noise above 85 dBPPE usage, collective acustic protection
RSI/WMDRepetitive tasks for long periods of timeAdequate use of rest, work breaks, warm up and stretching exercises
Silicosis and asbestosisInhalation of fine particles from asbestos and ceramic like materialsUse of appropriate PPE (masks)
Air embolismUnderwater work or incorrect use of equipmentCompliance with norms and decompression procedures
Low back painInadequate material handling/load liftingAvoidance of heavy lifting/use proper mechanical aid
Heat stressLong exposure to ultraviolet sun raysProper hydration and avoiding excessive sun exposure
Contact dermatitisContact with cement, chemicals or even certain types of PPEUse PPE appropriately, clothing, gloves and so on

Table 2.

Prevailing occupational illnesses in the BCI.

The last letter in the HSE acronym represents the environmental aspects of the workplace, its aspects and impacts for the people and surroundings. The BCI is by large the biggest generator of solid urban waste. Considering the entire production chain, the environmental impact varies according to the construction system (steel, wood, concrete and combinations) but it is always high nonetheless. The graph on Figure 2 shows the distribution of greenhouse gas emissions in Canada per each type of economic sector, placing the BCI, negatively, as a major contributor for another important environmental indicator. The full report makes considerations on the data gathering methodology that raises the numbers for the construction sector even more by adding indirect impact of the entire production chain [16].


Figure  2.

Distribution of greenhouse gas emissions in Canada.

The BCI’s overall environmental impact has to do with processes such as mining (for sand and aggregates), which accounts for great levels of energy consumption, transportation (mostly by diesel trucks) and last, but not least, generation and inadequate disposal of debris and unused materials. In fact, a great deal of the problem is created by the lack of understanding and acknowledge on the part of authorities and society in general regarding the negative impacts of clandestine disposal and the benefits of solid urban waste disposal. Usually, BCI solid waste is considered a minor environmental hazard, which impact is basically due to the volume generated. However, this misconception hides some by-products of those residues, such as the proliferation of undesirable species as rats, cockroaches and insects that may act as vectors for various diseases [17].

3. Developments and building of the model

Every management system model is embedded with particularities and peculiarities related to whatever industry it will be applied in. As obvious as it sounds, it is not rare to find various management systems that are built with generic mechanisms and inferences that will not adhere to specific industry processes. HSE management systems for transformation industries, for example, follow certain criteria based on the nature of their operations. If it involves air pollution, preventive actions related to chimneys are necessary to be considered in maintenance plans. Likewise, occupational health issues will vary immensely, depending on the presence of certain risk factors, prevalent climate and atmosphere, geographical and geological conditions and other aspects. Using EDT methodology, the team involved in a consulting project in charge of carrying out an analysis for setting up a new HSE program in a construction site, decided to start with a brainstorm activity with all key actors in a construction site. The resulting master plan for the program establishment and project implementation was defined according to an operational sequence based on Table 3.

Analysis phase - Observational analysis–during this step the consulting project team performs workstation and activity analysis to assess program guidelines and best practices opportunities
- Tool applications–methodological tools are applied to facilitate the process and maximize results
- Project reporting–it represents the communication of the results to the various agents (managers, engineers and workers)
Validation phase - Project validation–the analysis report needs to be verified and validated by all stakeholders, in search of errors and misinterpretations
- Complementation–as a consequence of the validation, new analysis, as well as the application of different tools, as required to assess different issues regarding environmental impacts, health and safety hazards
- Final check–before implementation the report is consolidated and a master action plan for the implementation is set forth. Elements for the banner launch are discussed and a schedule is set for that and other implementation actions
Implementation phase - Capacitation training sessions–as part of the HSE management system, workers and other people involved in the various construction site processes need to be informed about and qualified to deal with risks hazards and to adhere to best practices related to health safety and environmental issues
- Banner launch–it is a symbolic event in which a banner illustrating best practices for HSE in construction sites is presented to workers and all the people using this workspace. The banner is displayed in conspicuous places inside the area, such as the lunchroom

Table  3.

Construction site HSE management system model.

4. Case study

In order to contextualize the proposed HSE management model, it is necessary to apply the various mechanisms embedded in that model in a real scenario. Thus, resourcing to a case study strategy will not only allow linking theoretical aspects to real life issues but also facilitate the understanding of the model outreach. A construction site in a city in the State of Rio de Janeiro, Brazil, was sorted out in this particular case, for better illustrating the application of the HSE management model being described herein. Starting from a general plan outlined in Table 1, each step will be now described in their most relevant aspects.

4.1. Analysis phase

An essential tool for the alignment of different perceptions and to establish, by consensus or inferences, guidelines for an appropriate diagnostic of a work process is the brainstorming tool. It is a group creativity technique that tries to lock up on conclusions for a specific problem by gathering ideas spontaneously, as they are verbalized by its members. It was extremely useful for the definition of the various analysis instruments, methods and techniques that were eventually implemented to carry out the work process analysis in the construction site. The methodology for the analysis phase follows this sequence:

  1. Global analysis: It starts with a walkthrough, a broad analysis that consists in screening both organizational and operational aspects that may influence or be influenced by the work environment. General characteristics of the enterprise need to be assessed and reported during this phase.

  2. Observational analysis: The observational analysis is concurrent to steps c and d. It displays the characterization of a given work activity or workstation with a short description of aspects and impacts, as well as images of eventual improvements derived from the action. Some activities were contextualized through a technique called “Animated Simulation” [18], in which workers simulate through role playing the real activity that takes place.

  3. OIT check list: It is dynamic questionnaire (excel spreadsheet) based on the most relevant aspects of the ergonomics check list from the International Labor Organization (OIT in Portuguese). It is built in a way that automatically displays essential information on the task and serves for prioritizing the HSE action plan.

  4. Conversational analysis: During the process of applying the HSE check list, the analysts use a technique called “Conversational Action” [19], which helps to “extract” important information more naturally from the workers.

  5. Tallying and validation of data: The results of all different actions, especially the application of action tools, must be tallied and validated.

  6. Reporting (communication) of findings: The last phase in the HSE management system methodology is reporting and communication. In ergonomic actions, there is a preliminary report, called hot report that is elaborated during the process in order not to miss important information that might be otherwise lost if left out for the end of the field work.

In order to stay focused on the main aspects of the analytical phase, a detailed explanation of all the different steps of the entire methodology could be counterproductive and cause some misconceptions. Therefore, only essential operational actions will be detailed, in other words, further description is concentrated only on those actions that were performed by the HSE analysis team in the course of the field work, prior to diagnostics itself.

4.1.1. Observational analysis

In order to better illustrate the context in which the observational analysis is carried out, an excerpt of the HSE appreciation report is needed. The selected operation consists of a concrete pouring process, for building foundation.

Foundation concrete : works

Workstation: bricklayers and helpers

Situation: The activity consists the pouring of concrete into wooden forms that were previously built and laid in each appropriate frame mold (Figure 3). The concrete is pumped up into the forms by a flexible pipe that connects to a special concrete truck, which has a rotating mixing barrel to maintain concrete’s chemical characteristics and pumping equipment (Figure 4). It may be performed under any climatic and atmospheric condition, except in case of heavy, persistent rain.


Figure  3.

Foundation pouring.


Figure  4.

Vibration of concrete mix.

Visible impacts: Awkward postures of workers, unsafe and unstable surfaces used as base for the activity, evidence of poor planning of activities and lack of operational and safety training, harsh environmental conditions without proper protection, no incentives for hydration, soil contamination, and improper solid waste disposal.

Checklist application: According to the HSE checklist, the activity stands in 53% of adequacy, which is considered acceptable by HSE standards. However, there are several small interventions that may raise current levels to a “good” mark, which will be listed in the following section.

Improvement opportunities: (a) adding collective protection equipment (CPE) in the workplace, (b) specific training designed to fit the nature of each task, (c) adding schedule pauses for certain activities, (d) potable water available next to the operations, (e) improving signage and notes in conspicuous places, (f) allocate appropriate areas for solid waste disposal, avoiding soil contamination, and (g) ladders and scaffoldings should be used as standard equipment.

Environmental aspects: During preparation and pouring of concrete at least 5% of material was lost (Figure 5), either by poor connection between hose joints, spills from truck equipment or by lack of care of workers as pumping is carried out. A lot of the concrete mix flows over the wooden forms or under them straight to the ground (Figure 6). In this particular case, not only the mix cannot be re inserted into the frames but also part of mix percolates through the soil. After hardening, the left overs could be reused as aggregates. However, the chosen destination for discharge in our context was a rented dumpster.


Figure  5.

Concrete waste.


Figure  6.

Wood waste.

Regulatory and legal framework: (a) Environmental–according to environmental regulations (CONAMA 307 Resolution, Art. 3rd) concrete and wood are class A materials, which mean they should be fully recycled. Therefore, it is not legal to discharge them as trash. If they are not used in the site, they must be taken to special facilities for future reuse; (b) health–in terms of occupational health, this work activity does not comply to several aspects of labor regulations, especially offending Articles in NR 15 (safety risks), NR 17 (ergonomics) and NR 24 (cleaning and conservation. Occupational hygiene standards are also disrespected, especially those related to temperature and weather exposure; (c) safety–there are some issues with regard to PPE and Collective Protective Equipment (CPE) during operations, as established by NR 6, NR 7 and NR 9, as well as Brazilian Technical Standards (ABNT/ISO).

4.1.2. OIT check list

According to the check list, which is a quite simple excel spreadsheet that runs in a tablet device, the particular activity shown in here stands in 53% of adequacy. This is considered acceptable by HSE standards. The filling of the check list is pretty much a straightforward operation. The analysts basically use their fingers to a scroll down list with two possibilities: yes and no/not applicable. The annotations in red are “manually” registered by the analysts and contain important notes for diagnostics and the establishment of “HSE Program Improvement Opportunities,” which is incorporated in the resulting Program’s Best Practices Banner (Figure 7).


Figure  7.

Tube underpinnings concrete pouring checklist.

4.1.3. Tallying and validation of data

The assessment of HSE conditions report (A-HSE report) is the final product of the analytical process. It is submitted to the scrutiny of all participants in the process during the validation phase that follows. The data submitted are organized according to relevance and synthetized in tables and diagrams, a selection of which is presented as follows. Some data come from images; therefore, they were not translated into English.

a. Severity table for each analyzed work activity: It presents the full list of work processes according to the degree of adequacy in terms of HSE standards Table 4). The lowest levels are color coded in red, moderate levels in orange and the highest ones in yellow.


Table 4.

Occupational severity levels.

b. SIC diagram: SIC stands for sum of critical indices (Table 5). It is elaborated using an excel spreadsheet with embedded logic formulas and simple macros. It produces a clear picture of the overall work system and allows prioritizing of an eventual HSE action plan according to the risks and severity aspects and impacts present in each activity, following gravity, trend and urgency of action. Its color coding allows instant visualization for sorting out those work activities that require urgent or immediate action (red and purple, respectively). The percentage result indicates solely the severity level, therefore, it is possible for an operation (or workstation) to have high adequacy to HSE standards but require special attention, just like in the example provided as follows.


Table 5.

Sum of critical index for one particular workstation.

c. Final overall portrait of the work system (RFO): As the name indicates, it is a final picture of the entire operation, as assessed by the analysis team. As in every HSE management system context, the picture is a representation of a current situation and it may be modified by several work environment circumstances and, of course, improved by appropriate HSE actions (Figure 8).


Figure  8.

Overall severity levels for the work environment.

4.2. Validation phase

A final and validated A-HSE report version, along with the HSE best practices banner is a combined final product of the validation process. They are both now ready to be implemented, along with its subsequent HSE program guidelines, which become part of a broader HSE management system or policy. The HSE program will be consolidated during the implementation phase that follows.

4.3. Implementation phase

Possibly, the best illustration of what Ergonomic Design Thinking can produce to the work systems is the final result generated in the process of application of our proposed HSE management system model. The PROSMS (HSE program) best practices banner is a quite symbolic representation of a collective interaction of people and disciplines to contribute towards a better, safe and sound work environment (Figure 9). It is “launched” in an event that combines training and social gathering. The banner is displayed in a conspicuous place inside the construction site, usually the lunchroom.


Figure  9.

HSE best practices banner.

5. Final considerations

The health safety and environmental management system model shown in this chapter resulted from the application of a methodology called Ergonomic Design Thinking. It is based in two equivalent project management approaches easily found in design and ergonomics projects. Preliminary experiences had already shown that the Design Thinking approach proved itself effective not only for design project actions [20]. Using the general concept derived by Tim Brown’s original approach, EDT adds the basic principle of ergonomics: No one knows better the work performed than workers themselves. And this is particularly true for ergonomics projects, since ergonomists and human factors professionals know exactly what is necessary to allow a perfect synchronicity between their logic and knowledge and the correct listening and interpretation of what some have been calling “the voices of the shop floor” [21].

Naturally, much more real-world experiences are needed to master the technique and to affirm without shadow of a doubt that this model is more effective and others. It is definitely better than the ones the authors have previously utilized. Hopefully, the publication of this text will provide an opportunity to disseminate the method and its tools to a more broad and global audience. To wrap up the discussion, a list of important issues that should be addressed before employing any participatory action method is presented down below.

  1. Know who the end users are (and involve them),

  2. Employ one methodology (not “the” methodology),

  3. Emphasize iterativeness (not only interactivity),

  4. Break the linear ruling (but don’t run in circles),

  5. Don’t ever give up (make lemonades with sour lemons),

  6. Be trustworthy (never hide flaws and mistakes),

  7. Communication is key, fear control is out (stimulate reports),

  8. Simulate real job situations (don’t guess what you don’t see),

  9. Never fear opposition (get opposition closer),

  10. Present well viewpoints (perception is more important than reality).

One last issue is important to address. The best thing about both EDT methodology and our proposed HSE management system model is that they do not employ intricate, complex tools or instruments. It is completely “open source”, so there is no proprietary software to buy, copyrighted materials or any similar exclusivity resource. Even some known and common tools used during ergonomic assessments, like the Corlett Diagram and the NIOSH equation for horizontal load handling, for example, are not under any trademark imposition. It was designed as a collective experiment in which all free men is more than welcome to join in.


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