B Balpress production process relies on operator skills, but not infrequently these activities causehuman errors. This is indicated by the damage to the balpress product.. This research was conducted usingthe method of Systematic Human Error Reduction and Prediction Analysis (SHERPA), Human ErrorAssessment and Reduction Technique (HEART), and Fault Tree Analysis (FTA. From the SHERPAmethod's identification results, approximately 11 operator activities had had the potential for human error.In the HEART method's identification results, the highest Human Error Probability value had beenobtained at 0.9471 in the press machine cleaning activity. The last stage using the FTA method producedresults identifying that the highest probability value for the critical event had been 0.29, and there had beenno SOP related to machine cleaning. A hot and dusty work environment produced a probability of 0.25 and0.17 for the operators' ineffective working positions. The proposed improvements were to prepare StandardOperating Procedures and checklists. Standard operating procedures and checklists were made on theprocess of cleaning machines, balpress inspections, and the cleanliness of work environment. Thesemethods had been validated with risk analysis, considering the probability and severity value. Thevalidation stage was carried out to determine the probability of occurrence and severity if the company didnot implement the implementation given. From each proposed improvement, the probability and severtity values of each proposal were obtained