This paper presents the proposals of preventive actions in small construction plants.  Proposals are results of: statistic data and accidents descriptions analysis, investigations using of elaborated check list, performed risk evaluation and interviews with employers. Proposals concern essential OSH problems, e.g. cooperation with the general contractor, OSH records, identification of hazards and risk assessment, organization of work, technical protective equipment against hazards, training workers as well as the use of machines and devices. It was pointed out the necessity of preventive actions conducting not only by small plants but also other participants of the construction process as well as other institutions could influencing on OSH improvement in construction.

To evaluate the effectiveness of occupational safety and health (OSH) management in a company, lagging indicators (characterizing OSH outputs) and leading indicators (related to OSH inputs and OSH activities) can be used. The development of OSH management is accompanied by changes in indicators used to evaluate its effectiveness. Sixty companies were surveyed to identify what kind of lagging and leading indicators were used depending on OSH performance. The results showed that indicators related to meeting legal requirements were most frequent. The other indicators were significantly more frequently used in companies with higher OSH performance.

Installations and water equipment, including cooling water systems are reservoirs that can be inhabited by a variety of microorganisms, including Legionella genus. Human infection with Legionella occurs through inhalation during introduction of these micro-organisms, together with the water spray directly to the respiratory system. Studies in mechanical glass processing factories have confirmed the presence of Legionella in technological water devices generating bioaerosol, indicating the risk of respiratory infections by their employees.
In view of existing health risks caused by colonisation of installation and water equipment with the Legionella, periodical monitoring towards the detection of these bacteria and developing procedures for including regular cleaning and disinfection treatments of devices that generate bioaerosol needs to be applied.

Product used for plant protection, that one was exposed to in his youth, can cause adverse reaction in children he conceives in his adulthood. Harmful effects of these substances for posterity deepened significantly in the exposure of pregnant women, infants and young children in whom pesticide detoxification mechanisms are not yet fully understood. This article discusses risks of usage of plant protection products by adults for the health of their children at different stages of development.