According to AARP, most people believe age discrimination begins when workers hit their 50s.
Last year, the EEOC received 20,857 charges of age discrimination. Age discrimination makes up more than 1 in 5 of the discrimination charges received by the EEOC.
According to the EEOC, Age discrimination complaints are a priority for them
https://www.aarp.org/work/employee-rights/info-02-2009/age_discrimination_fact_sheet.html
https://www.aarp.org/work/on-the-job/info-2017/age-discrimination-facts.html
https://www.forbes.com/sites/lizryan/2014/01/31/the-ugly-truth-about-age-discrimination/#338af2af44e7
https://www.nolo.com/legal-encyclopedia/suing-age-discrimination.html
https://www.npr.org/2018/08/16/637499979/are-job-ads-targeting-young-workers-breaking-the-law
https://www.blr.com/HR-Employment/Discrimination/Age-Discrimination
https://www.asaging.org/blog/epidemic-age-discrimination