Thisstudyaims toanalyzetheeffectoftotalqualitymanagementoncost efficiencyatEMPMalaccaStrait,the influenceofjustintimeonoperational performance atEMPMalacca Straitandtotalqualitymanagementandjustin simultaneously onoperationalperformanceat EMPMalaccaStrait. Thenumber ofsamplesinthisstudy were78respondents.Theanalysistechniqueusessimple regression analysis and multipleregression. The resultsshowedthattotalquality managementandjustintime simultaneously hadasignificanteffectonoperationalperformancebecause total qualitymanagementwasmaintainedin termsofteamwork.Accordingtothe employeesdoingwork withfullresponsibility andsupportedbythestandardof time usedtosupportcontrolofproductioncosts.Totalquality managementhasa positiveeffectonoperationalperformance.Thisshowsthattotal quality management that are maintained in terms of teamwork according to the employeesdoingworkwith fullresponsibilitycanimproveoperational performance.Justintime hasapositive effectonoperationalperformance. This showsthatthestandard oftimeusedtosupportcontrolofproductioncostscan significantly improveoperational performance.
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