ABSTRACT
Tender documents generally allow the contractor to tender percentage variations to the figure calculated using the published percentage additions. These vary widely but a reasonable average indication can be along the lines of:
Labour 20% less
Materials 10% less
Plant 30% less
Labour
The Contractor should provide substantiation of the hourly rates he wishes to be paid for the various classes of labour and should demonstrate that the basic ‘amount of wages’ does not include any of the items actually covered by the percentage addition.
