I'll be absolutely honest.  I'm cheating a little by reiterating the post Why is job evaluation important?  Having put my thoughts together on the subject over the past few weeks, I felt this one was worth saying again.

To me, the main reason job evaluation is important is because it provides an objective and systematic way to determine the relative value of different jobs within an organization. When you evaluate jobs, you assess factors like skills, responsibilities, effort, and working conditions to create a fair and consistent basis for comparing jobs and determining their worth. 

That to me is why its so important.

Here's a link to the blog with the detail:

Why is job evaluation important (rewardrisk.co.uk)

And why am I cheating today?  This morning I am wfh, waiting for a delivery and baking cakes for tomorrow's Macmillan Coffee Morning at the Exchange in Tewkesbury.  This will be our third one and each time we have increased our donations by at least £100.  And every year some of the fabulous businesses nearby give us some super donations for the tombola.  So if you're over this way tomorrow pop in about 10.30 and grab some cake.