First described by Burns in 1978, group leaders were one of the five types of transactional leaders documented. Group Leaders are sometimes referred to as bureaucrats, and are also considered bargainers. The types of transactions that a group leader might be involved with include mutual support, and the setting of expectations and rewards.
The group leader, like the bureaucrat, can sometimes be granted leadership status by the position they hold in an organization. For example, this leader might be a group manager or a group supervisor.
Burns categorized group leaders as transactional leaders, meaning this leadership style relied on transactions with followers. Group leaders will bargain with their followers using this type of implied transaction: "You give me good results, and I will give you more money." As such, these transactions create a mutually beneficial arrangement between the leader and follower.
Executive leaders, legislative leaders, opinion leaders, and party leaders were the other four leadership styles documented by Burns.