Abstract: A location based Quality Assurance System and a method to collect data in work spaces in terms of locations, environment conditions, time, workers and behaviours, thru the wireless interactions (M2M) of located and installed sensors on sites and PPE with detachable or built-in sensors, which data wirelessly transmitted to remote servers for big data analysis in order to enhance effective communication and management of safety, work flow, work forces, worker attendance and project in work spaces.