267. Extension of time and liquidated damages.

Generally, contracts for construction works provide that in the event of the contractor's failure to complete by the date specified for completion the contractor is to pay a specified sum or that the employer may deduct a specified sum from money due to the contractor1. There must be a definite date from which liquidated damages are to run; if there is no specified date or if the date for completion is invalidated by an instruction to the contractor to carry out additional work2 or by some other fault of the employer the employer's right to claim or deduct liquidated