Ahmoudj lynda2025-05-122021https://dspace.esm-tlemcen.dz/handle/123456789/117Within organizations, internal communication gradually goes beyond its role of transmitting information to become a real management tool. It is thus capable of bringing many benefits to organizations and in particular makes it possible to have a positive influence on the employee, in various ways. The aim of this research is to show how internal communication manages to influence the motivation and the quality of the employee's work. To do this, this brief is made up of two parts. The first takes up a theoretical framework linked to the two main concepts: internal communication, motivation at work. The second presents a theoretical approach on the host organization and the conclusions drawn by a questionnaire distributed to the various socio- professional categories exist within the ETBPH Company. For our study we pursued a quantitative method, with the personnel of the company "ETBPH, PI", from a sample of (83 responses) on a questionnaire containing 3 axes (personal data, internal communication and communication impact internal on employee motivation) We have come to the fact that internal communication has a positive influence on staff motivation, developing an internal communication strategy improves the performance and productivity of the company.frCommunicationbusinesspersonnelmotivationinformation integrationinvolvementThesis