Firefighters are exposed to carcinogens that may increase their risk of developing many types of occupational cancer. Many systematic reviews (SRs) have been produced with sometimes conflicting conclusions. In this overview of reviews, we aim to assess the conclusion consistency across the available systematic reviews on the cancer risk in firefighters. Literature searches were conducted in several indexed databases and grey literature to retrieve systematic reviews aiming to evaluate cancer incidence or cancer mortality in firefighters. Results from included SRs were analyzed according to the tumour site. Out of 1054 records identified by the search in the databases, a total of 11 SRs were ultimately included. The original studies (n = 104) analyzed in the SRs were published between 1959 and 2018. The results consistently reported a significant increase in the incidence of rectal, prostate, bladder and testicular cancers as well as mesothelioma and malignant melanoma in firefighters compared to the general population. The SRs also indicate that death rates from rectal cancer and non-Hodgkin’s lymphoma are higher among firefighters. Consistent SR results suggest that several types of cancer may be more frequent in firefighters than in the general population.

• Few studies have evaluated the effectiveness of social media in promoting healthy employee. • No specific studies focused on ESN for promoting OHS or healthy employee lifestyles. • Some studies suggest that social media may be useful to promote OHS prevention. • This research field needs more well-designed studies on technologies contributions.

Purpose: Research findings stress the importance of adapting prevention mechanisms to the contexts experienced in the workplace. This paper presents the development and implementation of a knowledge portal that includes a range of Internet-based resources to support the prevention measures implemented by occupational health and safety (OHS) union delegates. It describes the process used to develop a knowledge portal that takes into account the needs of communities and unions as well as the constraints expressed.Design/methodology/approach: The approach chosen for this project was action research, in which data collection results in various readjustment loops that allow for reflection and situational assessment. Data were collected from documentation, meetings, questionnaires and focus groups. The readjustment loops led to the implementation of a solution based on sustainability.Findings: After studying the context, needs and constraints, the results suggest that for a knowledge portal to stand out, it must be consistent with classroom training, include a pedagogical approach that facilitates the transfer of knowledge, be interesting to all workers, be able to adapt to the characteristics of users and use technologies that reach across time, space and connection tools.Originality/value: This knowledge portal is the result of interactions and collaborations between the university and the community, an interesting way to develop a solution. It sheds light on the fact that the action research process needs to be documented throughout the process and creation cycles in order to facilitate the sharing of the results obtained.

The objective of this study is to examine, in primary and high schools, teachers' compliance with preventive infection control measures (in the context of the COVID-19 pandemic). Inspired by the technology acceptance model (TAM) and occupational health and safety (OHS) literature on personal protective equipment (PPE) use, we propose a model of compliance with preventive measures among teachers. Data were collected following an observational, cross-sectional design. The data for the study were collected via a questionnaire survey of teachers working in the province of Quebec, Canada. To study the impact of the explanatory variables on the dependent variable, we developed a multiple linear regression model. This model was estimated to assess the preventive measures as a whole (six items). Results show that having tested positive for a COVID test in the last year, judging that the situation does not require the use of the mask or the protective glasses, training received on preventive measures, factors related to comfort and use of protective eyewear, as well as age influence teacher compliance with COVID-19 preventive measures.