Compare two worksheets in the same workbook and highlight the difference on the second

Hi;

I have been requested by my manager to compare two worksheets within the same workbook - 'blended wage cost' and 'sheet1' (workbook attached).
I would like some Excel professionals to help me to write some vba code to compare the column A - row 3 onwards (blended wage cost worksheet) with column A row 1 onwards (sheet 1 worksheet) and then highlight the rows yellow in 'sheet1' that aren't present in the 'blended wage cost' worksheet. I'm struggling to get this done so I would be very grateful for any help on this.

Thank you
C