Ask any constructional worker and there is a high probability that this person knows a colleague with pain or other disorders caused by working with power tools. According to the Swedish Work Environment Authority 71 percent of the Swedish constructional workers is exposed to vibrations at least 25 percent of the working hours. Despite this, the number of reported occupational sicknesses caused by vibrations is as low as 1, 4 percent. JM Ltd. is one of the largest constructional companies in Sweden. Their main business is new housing and development of residential areas. God quality and low impact on the environment is a part of great importance in the company’s long-term goals. To achieve this, and to ensure an effective production, the activities have gradually been organized according to Lean production. In the year of 2010 the producing part of the company began to use methods originating from Lean such as process orientation and standardization of work procedures. JM calls this Structured production. The purpose of this thesis is to investigate how working according to Lean when producing apartment buildings interacts with a safe working environment. The goal is to investigate and identify problematic operations during the assembly of semi-prefabricated, non-bearing walls so-called perimeter walls. The method used is a time study conducted in spring of 2014 on construction sites in Stockholm. The exposure to vibrations from power tools on construction workers, when working according to the installation instructions applicable at JM’s building projects was examined. The study revealed that the action value determined by the Swedish Work Environment Authority was exceeded when installing perimeter walls according to the installation instructions. The conclusion is to extend measurements and medical surveillance of exposed operations and personnel. A package of equipment and materials to be used when installing perimeter walls is presented along with possible methodological improvements of the installation instructions.

Inledning: Arbetsmiljön är en viktig aspekt att ta hänsyn till för att undvika skador. Det är allt från ergonomiska skador till sjukdomar som kan förhindras genom att använda sig av rätt teknik och skyddsutrustning. En annan viktig del inom tandteknikeryrket är att laboratorierna måste ta ansvar för sina handlingar, till exempel val av material och materialhantering samt fokus på arbetstagarnas säkerhet. Slutligen för att kunna uppnå ett optimalt resultat krävs det att laboratorierna är kvalitetssäkrade. Syfte: Syftet med arbetet är att undersöka hur tandtekniska arbetsplatser ser ut, utifrån ett arbetsmiljöperspektiv.Material & metod: Intervjuerna genomfördes på tandtekniska laboratorier i Malmö genom att ha semistrukturerade intervjuer. Fem dental laboratorier medverkade i undersökningen, var vid respektive laboratoriechefer och skyddsombud intervjuades.Resultat:Studien påvisade medvetna laboratoriechefer/skyddsombud som hade planer på hur de skulle gå tillväga för att uppnå ett bra resultat med gynnsamma arbetsmiljöförhållande. Fyra av fem respondenter konstaterade att arbetstagarna är medvetna om riskerna som kan uppstå på arbetsplatsen.Slutsats:Slutsatserna som kan dras med beaktande av studiens begränsningar är att:•Intervjuerna visade att respondenterna är medvetna om hur en optimal verksamhet kan uppnås utifrån ett arbetsmiljöperspektiv. Dock tas inte alltid ställning till det på grund av bland annat brist på resurser.•Studien visade att mätningar på ventilation och utsug utförs regelbundet för att säkerställa att allt är under kontroll. / Introduction: The work environment is an important aspect to consider in order to avoid damage. One way to prevent injuries, diseases and poor ergonomics is by using protective equipment that are provided for such things. Another important part of the dental technician profession is that laboratories must take responsibilities for their actions. They need to consider the right use of materials and how to handle them correctly. The laboratory must also focus on the employee’s safety. At last, in order to achieve an optimal result, it is required that laboratories are quality assured.Aim: The aim of this study is to investigate how a dental laboratory looks from a work environment perspectiveMaterial and method: The semi-structed interviews were held in dental laboratories in Malmö. Five dental laboratories participated in the survey in which laboratory manager/safety representative were interviewed.Results: The study showed positive results and awareness among laboratory managers/safety representatives that have knowledge of how to achieve favorable working conditions. Four out of five respondents established that the employees are aware of the risks that may occur in the workplace.Conclusion: Within the scope of the study, the following conclusions can be drawn:• The interviews showed that the respondents are aware of how to achieve an optimal work environment, but they do not always have the resources to do so. • The study showed that measurements of ventilation and suction are performed regularly to ensure that everything is under control.