The document provides an overview of job evaluation processes and systems through a comparative study. It describes job evaluation as systematically determining the relative worth of jobs in an organization. The key purposes are to establish a rational pay structure and achieve equitable distribution of wages. Several common job evaluation methods are examined, including Paterson, Hay, Peromnes, and Castellion systems. Each method evaluates jobs based on different compensable factors like decision-making, skills, knowledge, responsibilities. The document also compares the strengths and weaknesses of different approaches and provides examples of how job grades correspond across evaluation systems.