Ultraviolet radiation is one of the physical concerns of the environment. Several nations have thus moved research attention to this area. This research work aimed at measuring the solar UV-B absorbance on outdoor workers in Nsukka metropolis, South Eastern Nigeria. An LS125 multi probe UV Light Meter with UV- B sensor was used to measure the UV-B irradiance across five study locations representing the various occupations, viz: Barracks (mechanics), Opi (Farmers), Ogige (Traders), Zik’s flat (motor park workers) and Onuiyi (Bricklayers). A UV-Vis spectrophotometer was used to determine the change in the optical absorbance of polymer polysulphone dosimeters. Result shows that UV-B Irradiance was highest at solar noon across the study locations. The dosimeter placed on the head received the highest dose of UV- B radiation at the study locations. The values of the cumulative UV-B exposure of the dosimeters placed on the body parts at the study sites were higher than the occupational exposure limit of 30J/m2 for a 6.5-hour exposure time for both the eye and skin recommended by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). The AIC and BIC values shows that the logarithm regression model outperformed the other models tested. This work therefor sets a reliable baseline data for solar UV-B radiation monitoring in Nsukka, South Eastern Nigeria and also recommend that protective clothing be worn carrying out daily activities during peak solar UV-B radiation hours,