Using a visible BI to construct lean manufacturing within big data There are several factors to influence effectiveness of manufacturing. People productivity is one of very important factor that helps to construct lean manufacturing that provides profit of company. We separate operators’ work hour into effective productivity and non-effective productivity to point out opportunity to improve productivity without heavy invest. Through constructed visible people loading with BI (Business Intelligent) software analysis system using existing KPI (Key performance Index), we can see whole picture of actual factory runs. Benchmark, resource leverage and re-organize job become possible and precise by visible chart within those huge data. Several truly opportunities and effective activities will be discussed as below that exposure by visible BI; most of them was executed and help us to improve at least 30% people productivity without extra heavy invest.