Intergenerational equity

{{Short description|Concept of fairness or justice between generations}}

File:Grandpa And Grandchild (148457889).jpeg

File:US Debt Trend.svg is often cited as an example of intergenerational inequity, as future generations will have the responsibility of paying it off. The U.S. National Debt has grown substantially over the past several decades{{Update needed|date=August 2024}}]]

Intergenerational equity in economic, psychological, and sociological contexts, is the idea of fairness or justice between generations. The concept can be applied to fairness in dynamics between children, youth, adults, and seniors. It can also be applied to fairness between generations currently living and future generations.{{cite news |last=McMullan |first=Sarah |date=August 5, 2017 |title=The Big Read: Generation wars |work=Herald Scotland |publisher= |url=http://www.heraldscotland.com/news/15456374.The_Big_Read__Generation_wars/}}

Conversations about intergenerational equity may include basic human needs, economic needs, environmental needs and subjective human well-being.{{Cite journal |last1=Summers |first1=J. K. |last2=Smith |first2=L. M. |date=October 2014 |title=The Role of Social and Intergenerational Equity in Making Changes in Human Well-Being Sustainable |journal=Ambio |language=en |volume=43 |issue=6 |pages=718–728 |doi=10.1007/s13280-013-0483-6 |issn=0044-7447 |pmc=4165836 |pmid=24402649|bibcode=2014Ambio..43..718S }} It is often discussed in public economics, especially with regard to transition economics,(2005) [http://www.ier.hit-u.ac.jp/pie/Japanese/seminar/A6-workshop0503/index.html "Economics of Intergenerational Equity in Transition Economies"] {{Webarchive|url=https://web.archive.org/web/20111002211721/http://www.ier.hit-u.ac.jp/pie/Japanese/seminar/A6-workshop0503/index.html|date=2011-10-02}} The PIE International Workshop{{Better source needed|reason=The current source is insufficiently reliable (WP:NOTRS).|date=November 2023}} (10–11 March 2005) social policy, and government budget-making.Thompson, J. (May 2003) [http://www.aph.gov.au/Library/pubs/rp/2002-03/03RP07.htm Research Paper no. 7 2002-03 Intergenerational Equity: Issues of Principle in the Allocation of Social Resources Between this Generation and the Next] {{Webarchive|url=https://web.archive.org/web/20110605041903/http://www.aph.gov.au/Library/pubs/rp/2002-03/03RP07.htm|date=2011-06-05}}. Social Policy Group for the Parliament of Australia. Many cite the growing U.S. national debt as an example of intergenerational inequity, as future generations will shoulder the consequences. Intergenerational equity is also explored in environmental concerns,{{Cite journal|url=https://journals.openedition.org/sapiens/165|title=Theories of intergenerational justice: a synopsis|first=Axel|last=Gosseries|date=November 26, 2008|journal=S.A.P.I.EN.S. |volume=1 |issue=1|via=journals.openedition.org}} including sustainable development,Carter, Neil. (2005) [http://www.fathom.com/course/21701763/session3.html Core Principles of Sustainable Development] {{Webarchive|url=https://web.archive.org/web/20120524171013/http://www.fathom.com/course/21701763/session3.html|date=2012-05-24}} Cambridge University Press. Fathom.com and climate change. The continued depletion of natural resources that has occurred in the past century will likely be a significant burden for future generations. Intergenerational equity is also discussed with regard to standards of living, specifically on inequities in the living standards experienced by people of different ages and generations.{{cite journal |last1=d'Albis |first1=Hippolyte |author-link1=Hippolyte d'Albis |last2=Badji |first2=Ikpidi |title=Intergenerational inequalities in standards of living in France |journal=Économie et Statistique / Economics and Statistics |date=2017 |volume=491–492 |pages=71–92 |doi=10.24187/ecostat.2017.491d.1906 |url=https://www.ntaccounts.org/doc/repository/Albis_Badji_2017.pdf }}{{cite journal |last1=d'Albis |first1=Hippolyte |author-link1=Hippolyte d'Albis |last2=Badji |first2=Ikpidi |last3=El Mekkaoui |first3=Najat |last4=Navaux |first4=Julien |title=Private asset income in France: Is there a breakdown of intergenerational equity between 1979 and 2011? |journal=Journal of the Economics of Ageing |date=2020 |volume=17 |issue=100137 |page=100137 |doi=10.1016/j.jeoa.2017.11.002 |s2cid=158450251 |url=https://halshs.archives-ouvertes.fr/halshs-03019470/file/JOEA_r%C3%A9vision_4nov2017.pdf }}{{cite journal |last1=Rice |first1=James M. |author-link1=James Mahmud Rice |last2=Temple |first2=Jeromey B. |last3=McDonald |first3=Peter F. |author-link3=Peter McDonald (demographer) |title=Private and public consumption across generations in Australia |journal=Australasian Journal on Ageing |date=2017 |volume=36 |issue=4 |pages=279–285 |doi=10.1111/ajag.12489 |pmid=29205845 |hdl=11343/253838 |s2cid=21715593 |url=https://www.jamesmahmudrice.info/Consumption.pdf }}{{cite journal |last1=Rice |first1=James Mahmud |author-link1=James Mahmud Rice |last2=Temple |first2=Jeromey B. |last3=McDonald |first3=Peter F. |author-link3=Peter McDonald (demographer) |title=Intergenerational inequality and the intergenerational state |journal=Journal of Population Research |date=2021 |volume=38 |issue=4 |pages=367–399 |doi=10.1007/s12546-021-09273-1 |s2cid=239233692}}{{cite journal |last1=Rice |first1=James Mahmud |author-link1=James Mahmud Rice |last2=Wilson |first2=Tom |last3=Temple |first3=Jeromey B. |last4=McDonald |first4=Peter |author-link4=Peter McDonald (demographer) |title=The impact of demographic and economic change on the Australian generational economy: Financial sustainability, intergenerational inequality, and material living standards |journal=Frontiers in Public Health |date=2022 |volume=10 |page=798298 |doi=10.3389/fpubh.2022.798298 |pmid=35774565 |pmc=9237328|s2cid=249628645 |doi-access=free }} Intergenerational equity issues also arise in the arenas of elderly care, social justice, and housing affordability.{{cite news |url=https://www.abc.net.au/news/2021-11-01/real-estate-housing-affordability-four-corners/100572780 |title=From a 'class divide' to 'intergenerational theft', Australia's real estate frenzy leaves many behind |author=Stephen Long |date=2021-11-01 |publisher=ABC }}{{cite news |url=https://www.theguardian.com/world/2021/mar/20/can-you-help-me-the-quiet-desperation-of-new-zealands-housing-crisis |title='Can you help me?': The quiet desperation of New Zealand's housing crisis |author=Elle Hunt |date=2021-03-19 |work=The Guardian }}{{cite news |url=https://www.ft.com/content/0c2a575a-8c4b-11e9-b8cb-26a9caa9d67b |title=Intergenerational warfare: Who stole the millennials' future? |author=David Willetts |date=2019-07-03 |publisher=Financial Times |access-date=2023-09-08 |archive-date=2019-07-03 |archive-url=https://archive.today/20190703052624/https://www.ft.com/content/0c2a575a-8c4b-11e9-b8cb-26a9caa9d67b |url-status=bot: unknown }}

Political rights

The debate around youth rights, children's rights and the rights of future generations includes discussions around when people should have political power, and how much they should have.{{Citation |last=Meyer |first=Lukas |title=Intergenerational Justice |date=2021 |url=https://plato.stanford.edu/archives/sum2021/entries/justice-intergenerational/ |encyclopedia=The Stanford Encyclopedia of Philosophy |editor-last=Zalta |editor-first=Edward N. |access-date=2023-06-29 |edition=Summer 2021 |publisher=Metaphysics Research Lab, Stanford University}} Adam Benforado argues, for example, that giving children more political rights than adults results in everyone being better off by, for example, increasing the salience of long-term issues.{{Cite book |last=Benforado |first=Adam |title=A minor revolution: how prioritizing kids benefits us all |publisher=Crown |year=2023 |isbn=978-1-9848-2304-5 |edition=First |location=New York |chapter=Chapter 1}}

Those seeking rights or greater consideration for future generations discuss methods such as deliberative democracy,{{Cite journal |last1=Koirala |first1=Pankaj |last2=Timilsina |first2=Raja Rajendra |last3=Kotani |first3=Koji |date=January 2021 |title=Deliberative Forms of Democracy and Intergenerational Sustainability Dilemma |journal=Sustainability |language=en |volume=13 |issue=13 |pages=7377 |doi=10.3390/su13137377 |issn=2071-1050 |doi-access=free |bibcode=2021Sust...13.7377K }}{{Cite journal |last1=Spencer |first1=Llinos Haf |last2=Lynch |first2=Mary |last3=Thomas |first3=Gwenlli Mair |last4=Edwards |first4=Rhiannon Tudor |date=2023-02-11 |title=Intergenerational Deliberations for Long Term Sustainability |journal=Challenges |language=en |volume=14 |issue=1 |pages=11 |doi=10.3390/challe14010011 |issn=2078-1547 |doi-access=free }} an ombudsman for future generations,{{Citation |last1=Beckman |first1=Ludvig |title=An Ombudsman for Future Generations |date=2016-12-22 |url=https://academic.oup.com/book/9618/chapter/156673237 |work=Institutions For Future Generations |pages=117–134 |editor-last=González-Ricoy |editor-first=Iñigo |access-date=2023-11-05 |publisher=Oxford University Press |doi=10.1093/acprof:oso/9780198746959.003.0007 |isbn=978-0-19-874695-9 |last2=Uggla |first2=Fredrik |editor2-last=Gosseries |editor2-first=Axel}} or other institutions tasked specifically with considering future generations.{{Cite journal |last=Gardiner |first=Stephen M. |date=2022 |title=On the Scope of Institutions for Future Generations: Defending an Expansive Global Constitutional Convention That Protects against Squandering Generations |journal=Ethics & International Affairs |language=en |volume=36 |issue=2 |pages=157–178 |doi=10.1017/S089267942200017X |s2cid=251232018 |issn=0892-6794|doi-access=free }} Some advocates also want a child impact assessment of policies or decisions to evaluate outcomes for a specific child{{Cite news |last=Queiro |first=Alicia |date=2014-10-15 |title=Innocent victims: Life for children with mothers behind bars |url=https://www.bbc.com/news/uk-scotland-29621654 |access-date=2024-08-04 |work=BBC News |language=en-GB}} or even the next generation more broadly.{{Cite web |date=2024-08-05 |title='We're better than this' - Children's Commissioner |url=https://www.nzherald.co.nz/nz/childrens-convention-monitoring-group-releases-report-to-better-child-wellbeing/3ITVFTYM2KAAITVNBVNY6DGQUE/ |access-date=2024-08-04 |website=The New Zealand Herald |language=en-NZ}}{{Cite news |last=Carvel |first=John |last2= |first2= |date=2003-10-20 |title=MPs want new child rights in UK law |url=https://www.theguardian.com/politics/2003/oct/20/childprotection.children |access-date=2024-08-04 |work=The Guardian |language=en-GB |issn=0261-3077}}

Public economics usage

= History =

Since the first recorded debt issuance in Sumaria in 1796 BC,{{cite web|url=http://viking.som.yale.edu/will/finciv/chapter1.htm|title=Financing Civilization|first=William|last=Goetzmann|website=viking.som.yale.edu|access-date=14 April 2018|archive-url=https://web.archive.org/web/20180320151618/http://viking.som.yale.edu/will/finciv/chapter1.htm|archive-date=20 March 2018|url-status=dead}} one of the penalties for failure to repay a loan has been debt bondage. In some instances, this repayment of financial debt with labor included the debtor's children, essentially condemning the debtor family to perpetual slavery. About one millennium after written debt contracts were created, the concept of debt forgiveness appears in the Old Testament, called Jubilee (Leviticus 25), and in Greek law when Solon introduces Seisachtheia. Both of these historical examples of debt forgiveness involved freeing children from slavery caused by their parents' debt.

The leaders of the Haudenosaunee Confederacy considered the precept of seven generation sustainability when making present decisions that could have significant impact on their potential future descendants.

Pope Francis, in his 2015 encyclical letter Laudato si', commented that{{quote|We can no longer speak of sustainable development apart from intergenerational solidarity. Once we start to think about the kind of world we are leaving to future generations, we look at things differently; we realize that the world is a gift which we have freely received and must share with others ... Intergenerational solidarity is not optional, but rather a basic question of justice.Pope Francis, [https://www.vatican.va/content/dam/francesco/pdf/encyclicals/documents/papa-francesco_20150524_enciclica-laudato-si_en.pdf Laudato si'], paragraph 159, published 24 May 2015, accessed 17 April 2024}}

= National debt =

Future generations could benefit if the investments made with the debt are more valuable than the amount of debt they created.{{cite web|url=https://krugman.blogs.nytimes.com/2011/12/28/debt-is-mostly-money-we-owe-to-ourselves/|title=Debt Is (Mostly) Money We Owe to Ourselves|date=28 December 2011|website=The New York Times|access-date=14 April 2018}} For example, to the extent that borrowed funds are invested today to improve the long-term productivity of the economy and its workers, such as via useful infrastructure projects, future generations may benefit.{{cite web |last=Baker |first=Dean |title=David Brooks Is Projecting His Self Indulgence Again |url=http://www.cepr.net/index.php/blogs/beat-the-press/david-brooks-is-projecting-his-self-indulgence-again |url-status=dead |archive-url=https://web.archive.org/web/20150402162004/http://www.cepr.net/index.php/blogs/beat-the-press/david-brooks-is-projecting-his-self-indulgence-again |archive-date=2 April 2015 |access-date=14 April 2018 |website=cepr.net}} Economist Paul Krugman wrote in March 2013 that by neglecting public investment and failing to create jobs, we are doing far more harm to future generations than merely passing along debt: "Fiscal policy is, indeed, a moral issue, and we should be ashamed of what we’re doing to the next generation's economic prospects. But our sin involves investing too little, not borrowing too much."{{cite news |last=Krugman |first=Paul |date=28 March 2013 |title=Opinion - Cheating Our Children |newspaper=The New York Times |url=https://www.nytimes.com/2013/03/29/opinion/krugman-cheating-our-children.html |access-date=14 April 2018}}

Others point out that higher debt levels also imply higher interest payments, which create significant costs for future taxpayers (e.g., higher taxes, lower government benefits, higher inflation, or increased risk of fiscal crisis).Huntley, Jonathan (July 27, 2010). [http://www.cbo.gov/doc.cfm?index=11659 "Federal debt and the risk of a fiscal crisis"]. Congressional Budget Office: Macroeconomic Analysis Division. Retrieved February 2, 2011. Stanley Druckenmiller and Geoffrey Canada call the large increase in government debt being left by the Baby Boomers to their children "Generational Theft".{{Cite news |last1=Canada |first1=Geoffrey |last2=Warsh |first2=Stanley Druckenmiller And Kevin |date=2013-02-15 |title=Canada, Druckenmiller and Warsh: Generational Theft Needs to Be Arrested |language=en-US |work=Wall Street Journal |url=http://online.wsj.com/article/SB10001424127887323485704578257753243530078.html |access-date=2023-06-29 |issn=0099-9660}}

= Social safety spending =

In Canada, spending on programs has been primarily benefiting older generations as far back as the 1990s.

The U.S. Social Security system has provided a greater net benefit to those who reached retirement closest to the first implementation of the system. The system is unfunded, meaning the elderly who retired right after the implementation of the system did not pay any taxes into the social security system, but reaped the benefits. Professor Michael Doran estimates that cohorts born previous to 1938 will receive more in benefits than they pay in taxes, while the reverse is true to cohorts born after. Also, that the long-term insolvency of Social Security will likely lead to further intergenerational transfers.Michael Doran (2008). “Intergenerational Equity in Fiscal Policy Reform”. Tax Law Review. 61: 241-293 However, Doran concedes that other benefits have been introduced into U.S. society via the welfare system, like Medicare and government-financed medical research, that benefit current and future elderly cohorts.

= Investment management =

In the context of institutional investment management, intergenerational equity is the principle that an endowed institution's spending rate must not exceed its after-inflation rate of compound return, so that investment gains are spent equally on current and future constituents of the endowed assets. This concept was originally set out in 1974 by economist James Tobin, who wrote that "The trustees of endowed institutions are the guardians of the future against the claims of the present. Their task in managing the endowment is to preserve equity among generations."Tobin, James (1974), "What is Permanent Endowment Income?" American Economic Review, American Economic Association, vol. 64(2), pages 427-432, May.

Environmental usage

File:Kids Want Climate Justice (34168280266).jpg is an example of intergenerational inequity, see climate justice.]]

Intergenerational equity is often referred to in environmental contexts, as younger age cohorts will disproportionately experience the negative consequences of environmental damage. For instance, it is estimated that children born in 2020 (e.g. "Generation Alpha") will experience up to seven times as many extreme weather events over their lifetimes, particularly heat waves, as people born in 1960, under current climate policy pledges.{{cite news |last1=Gramling |first1=Carolyn |title=2020 babies may suffer up to seven times as many extreme heat waves as 1960s kids |url=https://www.sciencenews.org/article/children-climate-change-generation-burden-extreme-heat |access-date=18 October 2021 |work=Science News |date=1 October 2021}}{{cite journal |last1=Thiery |first1=Wim |last2=Lange |first2=Stefan |author3-link=Joeri Rogelj|last3=Rogelj |first3=Joeri |last4=Schleussner |first4=Carl-Friedrich |last5=Gudmundsson |first5=Lukas |last6=Seneviratne |first6=Sonia I. |last7=Andrijevic |first7=Marina |last8=Frieler |first8=Katja |last9=Emanuel |first9=Kerry |last10=Geiger |first10=Tobias |last11=Bresch |first11=David N. |last12=Zhao |first12=Fang |last13=Willner |first13=Sven N. |last14=Büchner |first14=Matthias |last15=Volkholz |first15=Jan |last16=Bauer |first16=Nico |last17=Chang |first17=Jinfeng |last18=Ciais |first18=Philippe |last19=Dury |first19=Marie |last20=François |first20=Louis |last21=Grillakis |first21=Manolis |last22=Gosling |first22=Simon N. |last23=Hanasaki |first23=Naota |last24=Hickler |first24=Thomas |last25=Huber |first25=Veronika |last26=Ito |first26=Akihiko |last27=Jägermeyr |first27=Jonas |last28=Khabarov |first28=Nikolay |last29=Koutroulis |first29=Aristeidis |last30=Liu |first30=Wenfeng |last31=Lutz |first31=Wolfgang |last32=Mengel |first32=Matthias |last33=Müller |first33=Christoph |last34=Ostberg |first34=Sebastian |last35=Reyer |first35=Christopher P. O. |last36=Stacke |first36=Tobias |last37=Wada |first37=Yoshihide |title=Intergenerational inequities in exposure to climate extremes |journal=Science |date=8 October 2021 |volume=374 |issue=6564 |pages=158–160 |doi=10.1126/science.abi7339|pmid=34565177 |bibcode=2021Sci...374..158T |s2cid=237942847 |url=https://nottingham-repository.worktribe.com/output/6345242 }} Moreover, on average, {{tooltip|2=(here people of age 65+ in 32 developed countries)|voters over 65}} played "a leading role in driving up GHG emissions in the past decade and are on the way to becoming the largest contributor" due to factors such as demographic transition, {{tooltip|2='only 58% of the silent generation (born 1928–1945) were concerned about climate change compared with 63% of baby boomers and 73% for millennials (born 1981–1996)'|less concern about climate change}}, and higher use of carbon-intensive products like energy for heating and private transport.{{cite news |last1=Mel |first1=Svein Inge |title=People over 60 are greenhouse gas emission 'bad guys' |url=https://phys.org/news/2022-03-people-greenhouse-gas-emission-bad.html |access-date=18 April 2022 |work=Norwegian University of Science |language=en}}{{cite journal |last1=Zheng |first1=Heran |last2=Long |first2=Yin |last3=Wood |first3=Richard |last4=Moran |first4=Daniel |last5=Zhang |first5=Zengkai |last6=Meng |first6=Jing |last7=Feng |first7=Kuishuang |last8=Hertwich |first8=Edgar |last9=Guan |first9=Dabo |title=Ageing society in developed countries challenges carbon mitigation |journal=Nature Climate Change |date=March 2022 |volume=12 |issue=3 |pages=241–248 |doi=10.1038/s41558-022-01302-y |bibcode=2022NatCC..12..241Z |s2cid=247322718 |language=en |issn=1758-6798|url=https://www.researchgate.net/publication/359121007|url-access=subscription|hdl=11250/3027882 |hdl-access=free }}

= Climate change =

{{See also|Climate change litigation|Right to a healthy environment}}

{{ multiple image | total_width=450

| image1 = 20240625 Global warming across generations - warming stripes.svg |caption1= Global warming—the progression from cooler historical temperatures (blue) to recent warmer temperatures (red)—is being experienced disproportionately by younger generations.{{cite web |title=Warming Across Generations |url=https://www.climatecentral.org/climate-matters/warming-across-generations |publisher=Climate Central |archive-url=https://web.archive.org/web/20240613055205/https://www.climatecentral.org/climate-matters/warming-across-generations |archive-date=13 June 2024 |date=22 March 2023 |url-status=live}}

Data source for global average surface temperature: {{cite web |title=Global temperature / Global mean temperature |url=https://climate.metoffice.cloud/temperature.html |publisher=Met Office (Meteorological Office, UK ) |archive-url=https://web.archive.org/web/20240117053030/https://climate.metoffice.cloud/temperature.html |archive-date=17 January 2024 |date=2024 |url-status=live}} (scroll down to Berkeley Earth under Global Mean Temperature)
Warming stripes concept by climatologist Ed Hawkins

| image2= 1960- Probability of exposure to unprecedented heat waves, by year of birth and global warming scenario -- SVG ARC statements.svg |caption2= Successive generations are predicted to experience progressively greater unprecedented lifetime exposure (ULE) events such as heat waves. About 111 million children born in 2020 will live with unprecedented heatwave exposure in a world that warms by 3.5 °C, compared with 62 million with only 1.5 °C of warming.{{cite journal |last1=Grant |first1=Luke |last2=Vanderkelen |first2=Inne |last3=Gudmundsson |first3=Lukas |last4=Fischer |first4=Erich |last5=Seneviratne |first5=Sonia I. |last6=Thiery |first6=Wim |title=Global emergence of unprecedented lifetime exposure to climate extremes |journal=Nature |date=7 May 2025 |volume=641 |pages=374-379 |doi=10.1038/s41586-025-08907-1|pmc=12058528 }}

}}

In 2015, a group of youth environmental activists filed a lawsuit against the U.S. federal government for insufficiently protecting against climate change in Juliana v. United States. Their statement emphasized the disproportionate cost of climate-related damage younger generations would bear:{{Cite news|url=https://www.nytimes.com/roomfordebate/2016/05/23/can-citizens-sue-the-government-over-climate-change/citizens-have-a-right-to-sue-for-climate-change-action|title=Citizens Have a Right to Sue for Climate Change Action|last=Chemerinsky|first=Erwin|date=July 11, 2016|work=New York Times|access-date=April 28, 2017}} “Youth Plaintiffs represent the youngest living generation, beneficiaries of the public trust. Youth Plaintiffs have a substantial, direct, and immediate interest in protecting the atmosphere, other vital natural resources, their quality of life, their property interests, and their liberties. They also have an interest in ensuring that the climate system remains stable enough to secure their constitutional rights to life, liberty, and property, rights that depend on a livable Future.”Juliana v. United States, First Amended Complaint for Declaratory and Injunctive Relief United States District Court, District of Oregon - Eugene Division, filed 9/10/15 In November 2016, the case was allowed to go to trial after US District Court Judge Ann Aiken denied the federal government’s motion to dismiss the case. In her opinion and order, she said, "Exercising my ‘reasoned judgment,’ I have no doubt that the right to a climate system capable of sustaining human life is fundamental to a free and ordered society."Juliana v. United States, Opinion and Order In the United States District Court for the District of Oregon Eugene Division, issued 11/10/16

Australian politician Christine Milne made statements in the lead-up to the 2014 Carbon Price Repeal Bill, naming the Liberal National Party (elected to parliament in 2013) and inherently its ministers, as intergenerational thieves; her statement was based on the party's attempts to roll back progressive carbon tax policy and the impact this would have on the intergenerational equity of future generations.{{Cite web |last=Hannam |first=Peter |date=2014-05-19 |title='Selling out future generations': Christine Milne rounds on Tony Abbott over climate change |url=https://www.smh.com.au/politics/federal/selling-out-future-generations-christine-milne-rounds-on-tony-abbott-over-climate-change-20140519-38jax.html |access-date=2023-06-29 |website=The Sydney Morning Herald |language=en}}

= Strong vs. weak sustainability =

A "weak sustainability" perspective argues that intergenerational equity would be achieved if losses to the environment that future generations face were offset by greater gains in economic progress (as measured by contemporary mechanisms/metrics). Some adherents also prioritize the moral concerns about those alive today, putting a discount rate on outcomes for future generations when accounting for generational equity.Beckerman, Wilfred. "'Sustainable Development': Is it a Useful Concept?" Environmental Values 3, no. 3, (1994): 191–209. {{doi|10.3197/096327194776679700}}. Others disagree.Brian Barry, 'Sustainability and Intergenerational Justice', in Dobson (1999) (Ed) Fairness and Futurity.Nicholas Vrousalis, 'Intergenerational Justice: A Primer', Institutions for Future Generations, A. Gosseries & I. Gonzalez (eds.), Oxford University Press 2016, pp. 49–64.{{Cite book |last=Ialenti |first=Vincent |title=Deep time reckoning: how future thinking can help Earth now |date=2020 |publisher=MIT press |isbn=978-0-262-53926-5 |series=One planet |location=Cambridge}} From the "strong sustainability" perspective, no amount of economic progress{{Verification needed|date=August 2024}} (or as measured by contemporary metrics) can justify leaving future generations with a degraded environment. Sharon Beder cautions that the "weak" perspective lacks a knowledge of the future and which intrinsically valuable resources will not be able to be replaced by technology.Sharon Beder, 'Costing the Earth: Equity, Sustainable Development and Environmental Economics', New Zealand Journal of Environmental Law, 4, 2000, pp. 227-243.

Standards of living usage

Discussions of intergenerational equity in standards of living reference differences between people of different ages or of different generations. Two perspectives on intergenerational equity in living standards have been distinguished by Rice, Temple, and McDonald. The first perspective – a "cross-sectional" perspective – focuses how living standards at a particular point in time vary between people of different ages. The relevant issue is the degree to which, at a particular point in time, people of different ages enjoy equal living standards. The second perspective – a "cohort" perspective – focuses on how living standards over a lifetime vary between people of different generations. For intergenerational equity, the relevant issue becomes the degree to which people of different generations enjoy equal living standards over their lifetimes.

Three indicators of intergenerational equity in standards of living have been proposed by d'Albis, Badji, El Mekkaoui, and Navaux. Their first indicator originates from a cross-sectional perspective and describes the relative situation of an age group (retirees) with respect to the situation of another age group (younger people). Their second indicator originates from a cohort perspective and compares the living standards of successive generations at the same age. D'Albis, Badji, El Mekkaoui, and Navaux's third indicator is a combination of the two previous criteria and is both an inter-age indicator and an intergenerational indicator. Further indicators of intergenerational equity have been developed by Rice, Temple, McDonald, and Wilson.

In Australia, notable equality has been achieved in living standards, as measured by consumption, among people between the ages of 20 and 75 years. Substantial inequalities exist, however, between different generations, with older generations experiencing lower living standards in real terms at particular ages than younger generations. One way to illustrate these inequalities is to look at how long different generations took to achieve a level of consumption of $30,000 per year (2009–10 Australian dollars). At one extreme, people born in 1935 achieved this level of consumption when they were roughly 50 years of age, on average. At the other extreme, Millennials born in 1995 had achieved this level of consumption by the time they were around 10 years of age.

Considerations such as this have led some scholars to argue that standards of living have tended to increase generation over generation in most countries, as development and technology have progressed. When taking this into account, younger generations may have inherent privileges over older generations, which may offset the redistribution of wealth towards older generations.{{Cite book |last=Gruber |first=Jonathan |url=https://books.google.com/books?id=UNpACwAAQBAJ&q=Gruber%2C%20Jonathan%20(2016).%20Public%20Finance%20and%20Public%20Policy%20Fifth%20Edition. |title=Public Finance and Public Policy Fifth Edition |publisher=Massachusetts Institute of Technology |year=2016 |isbn=978-0716786559 |location=Massachusetts, United States}}{{Page needed|date=August 2024}}{{Failed verification|date=August 2024}}

= Housing =

Housing has become a growing issue of intergenerational equity in the 21st century, especially among younger generations struggling to afford rent or other housing costs.{{Cite news |last1=Roberts |first1=Millie |last2=Ibrahim |first2=Tony |date=2024-02-05 |title=San Francisco 'wiped out' the middle class. Sydney needs to 'act now' to ensure housing equity, NSW treasurer says |url=https://www.abc.net.au/news/2024-02-05/nsw-sydney-housing-crisis-san-francisco-treasurer/103426896 |access-date=2024-08-04 |work=ABC News |language=en-AU}} The housing shortage at the root of the affordability crisis took years to create and would take years to reverse by building enough housing.{{Cite news |last=Dyer |first=Evan |date=April 21, 2024 |title=Can Trudeau's budget restore 'generational fairness'? Economists say don't bet on it |url=https://www.cbc.ca/news/politics/budget-generational-fairness-dyer-1.7178253 |work=CBC}} This has led to more pessimism about the future and cynicism of politics and even democracy in younger generations.{{Cite news |last1=Dettmer |first1=Jamie |last2=Cancryn |first2=Adam |last3=Hartog |first3=Eva |last4=Taylor-Vaisey |first4=Nick |date=August 3, 2024 |title=Priced out of housing, many younger disillusioned voters embrace populism |url=https://www.politico.com/news/2024/08/03/unaffordable-housing-populism-00172552 |work=Politico}}

= Health and wellbeing =

A wide range of health measures, both objective and subjective, can be used to discuss how to prioritize wellbeing across generations. One such measure seeks to help everyone achieve a certain level of health for a 'fair' period of time in their life, even if it means sacrificing some efficiency in the health care system.Williams, A. (1997) "Intergenerational equity: An exploration of the 'fair innings' argument." Health Economics. 6(2):117-32.

== Elder care ==

Professor Steven Wisensale describes the burden on current working age adults in developed economies, who must care for more elderly parents and relatives for a longer period of time. This problem is exacerbated by the increasing involvement of women in the workforce, and by the dropping fertility rate, leaving the burden for caring for parents, as well as aunts, uncles, and grandparents, on fewer children.Steven K. Wisensale PhD (2005) Aging Societies and Intergenerational Equity Issues, Journal of Feminist Family Therapy, 17:3-4, 79-103, {{doi| 10.1300/J086v17n03_05}} In systems with weak social security systems, this also impacts the wellbeing of the elderly who may have fewer caretakers than are optimal.{{Cite news |last=Willian |first=Caroline |date=March 27, 2017 |title=Sang-Hyop Lee on the middle-income trap and demographic crisis in East Asia |work=Asia Experts Forum}}