Origins and applications of RULA (Rapid Upper Limb Assessment) and REBA (Rapid Entire Body Assessment), two ergonomic tools created to identify workplace risks associated with repetitive strain and manual handling. Developed by Dr. Lynn McAtamney and Sue Hignett, respectively, RULA focuses on static posture risks, while REBA addresses dynamic movements. With AI advancements, these assessments now provide faster, more accurate ergonomic evaluations.