Physical factor is a factor based on changes in physical substances in the environment, i.e. vibration, noise, electromagnetic field, ionizing radiation, hot or cold environment, lighting.

Chemical agent means any chemical element or compound, whether pure or blended in nature, produced, used or released (can be as waste) in the course of any process, whether or not it is manufactured deliberately or not, placed on the market or not.

Biological factor is a factor based on substances of biological origin, microorganisms including genetically modified, cell cultures and human endoparasites, amino acids, etc.

Ergonomic factor is a factor based on the amount of physical workload and tension and the adaptation of the workplace to the employee's capabilities.

Psychosocial factor is a factor that causes mental distress to the employee due to working conditions, job requirements, work organization, the content of the job, the relationship between the employee or the employer and the employee.

Physical (mechanical, etc.) factor is a factor that, under certain accidental circumstances, can cause an employee to be traumatized by the physical effects of objects, as well as possible explosion, fire, failure to ensure the stability and firmness of structures.