20thcentury aged agediscriminationinemployment aging alcoholics alcoholism alcooliques attitudes careerchanges casestudies childabuse childlabor childwelfare congresses developingcountries disabilityinsurance discriminationagainstpeoplewithdisabilities discriminationinemployment earlyretirement economicaspects economics employment employment(economictheory) europeaneconomiccommunitycountries europeanunioncountries executives france germany(west) governmentpolicy greatbritain healthandhygiene history hoursoflabor industrialhygiene industrialsociology iowa italy jobsatisfaction labormobility laborsupply lawandlegislation longitudinalstudies manpowerpolicy medicalassistance men oldageassistance oldagepensions oldermen olderpeople olderwomen part-timeemployment peoplewithdisabilities populationaging prevention publicopinion quartiersdeclochards readaptation rehabilitation retirement retirementage retirementincome ruralelderly ruralpopulation réadaptation skidrow socialpolicy socialsecurity statistics unemployment unitedstates veterans wages well-being women