Time banking. Time banking is a pattern of reciprocal service exchange that uses units of time as currency.
It is an example of a complementary monetary system. A time bank, also known as a service exchange, is a community that practices time banking. The unit of currency, always valued at an hour's worth of any person's labor, used by these groups has various names, but is generally known as a time dollar in the USA and a time credit in the UK. Time banking is primarily used to provide incentives and rewards for work such as mentoring children, caring for the elderly, being neighborly—work usually done on a volunteer basis—which a pure market system devalues. Kurt Vonnegut's 8 Tips on How to Write a Great Story - Entertainment.
The Shock Doctrine: The Rise of Disaster Capitalism (9780312427993): Naomi Klein.