The theory of the firm consists of a number of economic theories that explain and predict the nature of the firm, company, or corporation, including its existence, behaviour, structure, and relationship to the market.[1] Firms are key drivers in economics, providing goods and services in return for monetary payments and rewards. Organisational structure, incentives, employee productivity, and information all influence the successful operation of a firm in the economy and within itself.[2] As such major economic theories such as transaction cost theory, managerial economics and behavioural theory of the firm will allow for an in-depth analysis on various firm and management types.