The Covid-19 pandemic has transformed the dynamics of the workforce and the workplace. Being affected by Covid-19, organizations had to mitigate the risks of workplace safety and their negative effects on the health of employees and society. A safe work environment is a critical factor in limiting the spread of infection and technologies can enable it. This paper describes a case study of 4EM method application for safe workplace modelling. The model is used for the communication and validation among different groups of stakeholders. It is the foundation for the Covid-19 safe workplace platform. The main goal of the spread of platform is to reduce the infection among employees on the workspace. The main sources of information for the platform are sensors, which are used to measure parameters of the working environment, such as CO2 ppm, the number of people in a room, the discipline of masks and the virus concentration levels of wastewater virus concentration. The 4EM (For Enterprise Modelling) diagram contains critical concepts that can allow minimization of infection risk in the workplace, which are entities, processes, business roles, and requirements of the information system.