The service industry sector is one of the livelihoods in Indonesia. This sector has increased from year to year. This study aims to identify and determine the amount of dominant waste in consulting service companies based on the concept of lean service and provide recommendations to minimize the occurrence of dominant waste from the causal factors. The results of the identification of waste using the value stream mapping show that there are activities that are non-value-added with a total time of 200.52 minutes of a total time of 839.01 minutes or 23.90% in the process of public training services. Based on the future state from value stream mapping after processed improvements there was founded that the time of activities that non-value-added reduced by 136.36 minutes, from 839.01 minutes to 702.65 minutes or reduced by 16.25%. The proposed improvements provided based on the analysis of critical waste causes to minimize waste dominant in the form of waste waiting are the addition of new employees for marketing, making Standard Operating Procedure, setting training price standards, and increasing bandwidth to increase internet speed in the work environment.

Plastics are widely used as the primary material in the production process for packaging products, both flexible and rigid packaging. In 2017, around 900 plastic packaging industries produced plastic packaging with a total of 4.68 million tons in Indonesia. Based on field observations, most plastic packaging products in the market do not follow the design criteria for material value conservation. In addition, the Indonesian legal framework regarding EPR that regulates producers' responsibility in reducing plastic waste already exists but has not been implemented, and there is no obligation to conserve the material values. This research aims to compile a description of the extended producer responsibility and explore the plastic packaging purchaser and producer companies' willingness to realize the material value conservation. Direct observation of 537 plastic packaging samples was carried out to obtain the distribution of samples for the plastic packaging residual value category. In addition, extended responsibility items for the two groups of companies were identified through literature review. From the survey results, the average RWI score of 3.88 indicates that overall, plastic packaging purchaser companies are somewhat willing to conserve the material values, and plastic packaging producers are somewhat willing to conserve the material value with the average RWI of 3.95.