Resumen
Communication in organisations is essential for them to be competitive in a global world that is constantly changing. Internal communication especially can be a highly effective and useful strategic tool for improving organisational performance through employee motivation and satisfaction. Based on a questionnaire survey completed by 426 employees of Portuguese organisations, this work aims to understand, using a partial least squares structural equation model, the importance of internal communication in the motivation and satisfaction of Portuguese employees. The results show that internal communication in organisations directly influences job satisfaction and also indirectly, through motivation at work, giving motivation at work the role of mediator. It is therefore important for Portuguese organisations to invest in effective internal communication strategies in order to promote employee motivation and satisfaction, recognising motivation as a key mediator in the relationship between internal communication and job satisfaction.