The value of the tasks a family member provides to the rest of the family. The economic value for a non-working spouse would be equal to the cost the family would incur to hire someone to complete the tasks in the absence of the non-working spouse less the cost of t spouse's personal maintenance. These costs usually include childcare and housekeeping but may also include transportation, the cost of eating out more often, tutoring and the like.
The sum of the following: direct use values (the net value of any income that can be earned from a resource, e.g., timber, fish, tourism); ecological function values (e.g., flood control, waste assimilation, storm protection); option values (e.g., sources of future drugs, genes for plant breeding); existence values (e.g., satisfaction that the resource exists); bequest values (e.g., inter-generational equity). As far as possible, the economic value is expressed in monetary terms (see environmental valuation).