The range of leisure activities extends from the very informal and casual to highly organised and long-lasting activities. A significant subset of leisure activities are hobbies which are undertaken for personal satisfaction, usually on a regular basis, and often result in satisfaction through skill development or recognised achievement, sometimes in the form of a product. The list of hobbies is ever changing as society changes.

Substantial and fulfilling hobbies and pursuits are described by Sociologist Robert Stebbins as serious leisure. The serious leisure perspective is a way of viewing the wide range of leisure pursuits in three main categories: casual leisure, serious leisure, and project-based leisure.
"Serious leisure is the systematic pursuit of an amateur, hobbyist, or volunteer ... that is highly substantial, interesting, and fulfilling and where ... participants find a [leisure] career...". For example, collecting stamps or maintaining a public wetland area.

People undertaking serious leisure can be categorised as amateurs, volunteers or hobbyists. Their engagement is distinguished from casual leisure by a high level of perseverance, effort, knowledge and training required and durable benefits and the sense that one can create in effect a leisure career through such activity.

The range of serious leisure activities is growing rapidly in modern times with developed societies having greater leisure time, longevity and prosperity. The Internet is providing increased support for amateurs and hobbyists to communicate, display and share products.
As literacy and leisure time expanded after 1900, reading became a popular pastime. New additions to adult fiction doubled during the 1920s, reaching 2800 new books a year by 1935. Libraries tripled their stocks, and saw heavy demand for new fiction. A dramatic innovation was the inexpensive paperback, pioneered by Allen Lane (1902–70) at Penguin Books in 1935. The first titles included novels by Ernest Hemingway and Agatha Christie. They were sold cheap (usually sixpence) in a wide variety of inexpensive stores such as Woolworth's. Penguin aimed at an educated middle class "middlebrow" audience. It avoided the downscale image of American paperbacks. The line signaled cultural self-improvement and political education. The more polemical Penguin Specials, typically with a leftist orientation for Labour readers, were widely distributed during World War II. However the war years caused a shortage of staff for publishers and book stores, and a severe shortage of rationed paper, worsened by the air raid on Paternoster Square in 1940 that burned 5 million books in warehouses.

Romantic fiction was especially popular, with Mills and Boon the leading publisher. Romantic encounters were embodied in a principle of sexual purity that demonstrated not only social conservatism, but also how heroines could control their personal autonomy. Adventure magazines became quite popular, especially those published by DC Thomson; the publisher sent observers around the country to talk to boys and learn what they wanted to read about. The story line in magazines and cinema that most appealed to boys was the glamorous heroism of British soldiers fighting wars that were perceived as ex…

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Time available for leisure varies from one society to the next, although anthropologists have found that hunter-gatherers tend to have significantly more leisure time than people in more complex societies. As a result, band societies such as the Shoshone of the Great Basin came across as extraordinarily lazy to European colonialists.

Workaholics, less common than the social myths, are those who work compulsively at the expense of other activities. They prefer to work rather than spend time socializing and engaging in other leisure activities.

European and American men statistically have more leisure time than women, due to both household and parenting responsibilities and increasing participation in the paid employment. In Europe and the United States, adult men usually have between one and nine hours more leisure time than women do each week.

Family leisure is defined as time that parents, children and siblings spend together in free time or recreational activities, and it can be expanded to address intergenerational family leisure as time that grandparents, parents, and grandchildren spend together in free time or recreational activities. Leisure can become a central place for the development of emotional closeness and strong family bonds. Contexts such as urban/rural shape the perspectives, meanings, and experiences of family leisure. For example, leisure moments are part of work in rural areas, and the rural idyll is enacted by urban families on weekends, but both urban and rural families somehow romanticize rural contexts as ideal spaces for family making (connection to nature, slower and more intimate space, notion of a caring social fabric, tranquillity, etc.). Also, much "family leisure" requires tasks that are most often assigned to women. Family leisure also includes playing together with family members on the weekend day.