The discipline of industrial relations encompasses core subject such as trade unionism, labour-management relations, collective bargaining, national and regional labour policy, and labour law. Human resources analyses the process of contracting and managing the people who make up an organisation or company, focusing on how to successfully ensure that the workforce and the managers of a company interact in a positive, fruitful way. This includes understanding all the complexities of these interactions, and their legal psychological, sociological and financial dimensions.