Cleaning is a job to be implemented in all industries and in public places and business premises. In general, it means cleaning floors and other surfaces, including washing floors, dusting, vacuuming, polishing floors and work surfaces as well as other tasks, such as removing trash, waste water disposal and similar. Frequently, cleaning tasks take place outside regular working hours, including in the early morning, late evening or at night. Some cleaning operations are specialised only for cleaning windows, facades, industrial plants, means of transport (trains, planes, buses, etc), premises and equipment in health care and cleansing effects of disasters such as fires, floods and the like. Bsides, cleaning, slipping, stumbling, falls and similar are the most common causes of accidents at work. Workers are exposed to dangerous substances, the risk of electrical currents, manual handling of loads, stress, as well as violence by third parties and sexual harassment.