Terminal workers work with physical load activities every day and are in a hot work climate, which has the potential to experience status disturbances, potentially resulting in hydration problems. The purpose of the study was to analyze the relationship between Heat stress and Physical Workload and Hydration Status of Tirtonadi Bus StationWorkers in Surakarta. research design using observational analytic with a cross-sectional approach. A sample of 48 people was taken by simple random sampling

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... echnique. Heat stress is measured by heat stress area, physical workload with SNI 726/2009, and hydration status by urine specific gravity examination. the average heat stress measurement results amounted to 34.75 ° C. the correlation between independent and dependent variables shows there is a significant relationship between heat stress and physical workload with hydration status with p-value = 0,000 and r = -0,799, and p-value = 0.028 and r = 0.317. Conclusion: There is a significant correlation between heat stress and hydration status, and there is a significant correlation between physical workload and the hydration status of workers at the Tirtonadi Surakata Terminal.