Project is a response to the needs of workers in the construction industry, who in most cases are not provided with hygiene and sanitary conditions and a place to prepare and eat meals during their break. Lack of these facilities are associated with stigmatisation of workers, who want to be seen as a professionals. Functional layout with minimal space provides all necessary functionalities. Thanks to the system profiles inside and outside, the trailer can be freely modified and extended with further accessories or functionalities to best suit the needs of the users.