19thcentury 2009c-716 20thcentury abuseof alcoholismandemployment automobileindustry automobileindustryandtrade automobileindustryworkers canada civilserviceethics collectivebargaining collectivelaboragreements corruptpractices criminallaw diagnosis discipline dismissalof drugsandemployment drugtesting employeeassistanceprograms employeediscipline employees england etc exercises greatbritain grievancearbitration history industrialaccidents industrialrelations interpretationandconstruction jurisprudence laborlawsandlegislation laborunions lawandlegislation laws legalstatus legislation management officialsandemployees police popularworks private problememployees problems québec(province) railroadaccidents railroads reporting safetymeasures statistics strikesandlockouts substance-relateddisorders substanceabuse substanceabusedetection supervisionofemployees unitedstates wales