Construction Law, Contract Administration

WHEN DOES A VARIATION IN CONSTRUCTION BECOME A SEPARATE CONTRACT?

Variations Clause
Most standard forms of contract include a clause under which the employer or his representative is able to issue an instruction to the contractor to vary the works which are described in the contract. A change in shape of the scheme, the introduction of different materials, revised timing and sequence are all usually provided for by the variations clause. It will also usually include a mechanism for evaluating the financial effect of the variation and there is normally provision for adjusting the completion date. In the absence of such a clause the employer could be in a difficulty should a variation to the works be required. The contractor could either refuse to carry out the work or undertake the work and insist upon payment on a quantum meruit or fair valuation basis. Calculation of the price for the extra work applying this method could involve payment well in excess of the contract rates. …