Dayworks in construction
Daywork is a means by which a contractor is paid for specifically instructed work on the basis of the cost of labour, materials and plant plus a mark up for overheads and profit. It is generally used when work cannot be priced in the normal way.
NRM2, RICS new rules of measurement, Detailed measurement for building work defines daywork as; '... the method of valuing work on the basis of time spent by the contractor’s workpeople, the materials used and the plant employed.'
Examples of when daywork may be applied are when unforeseen obstructions are encountered during ground works or when work is instructed for which there are no comparative rates in a bill of quantities.
It is usual for most contracts to contain clauses that provide a method of evaluating variations, additional work and instructions by using existing contract rates and prices. NEC contracts favour pre-agreed sums based on acceptance of a contractor’s quotation.
There are two basic options as to how daywork rates can be priced:
Option A – a percentage addition
- Prime cost to which a percentage is added for overheads, profit and incidental costs.
Option B – all inclusive rates
- All inclusive rates are quoted at tender and incorporated in the contract documents. These include an allowance for overheads and profit, either fixed for the period of the contract, or, in the case of contract conditions that are index linked, subject to an inflation allowance.
[edit] Related articles on Designing Buildings
Featured articles and news
Apprenticeships and the responsibility we share
Perspectives from the CIOB President as National Apprentice Week comes to a close.
The first line of defence against rain, wind and snow.
Building Safety recap January, 2026
What we missed at the end of last year, and at the start of this...
National Apprenticeship Week 2026, 9-15 Feb
Shining a light on the positive impacts for businesses, their apprentices and the wider economy alike.
Applications and benefits of acoustic flooring
From commercial to retail.
From solid to sprung and ribbed to raised.
Strengthening industry collaboration in Hong Kong
Hong Kong Institute of Construction and The Chartered Institute of Building sign Memorandum of Understanding.
A detailed description from the experts at Cornish Lime.
IHBC planning for growth with corporate plan development
Grow with the Institute by volunteering and CP25 consultation.
Connecting ambition and action for designers and specifiers.
Electrical skills gap deepens as apprenticeship starts fall despite surging demand says ECA.
Built environment bodies deepen joint action on EDI
B.E.Inclusive initiative agree next phase of joint equity, diversity and inclusion (EDI) action plan.
Recognising culture as key to sustainable economic growth
Creative UK Provocation paper: Culture as Growth Infrastructure.
Futurebuild and UK Construction Week London Unite
Creating the UK’s Built Environment Super Event and over 25 other key partnerships.
Welsh and Scottish 2026 elections
Manifestos for the built environment for upcoming same May day elections.
Advancing BIM education with a competency framework
“We don’t need people who can just draw in 3D. We need people who can think in data.”






















Comments
There is a great mobile phone App that lets you quickly create a daywork or just a resource estimate and send it to the office in minutes, the App date stamps start and finish photos to help you prove the record is a true reflection of the works. It also allows you to quickly get pre-authorisation of the daywork prior to starting the works. Here's the link http://www.constructionrates.co.uk/Rate_Gen/Android_Mobile_Tablet_Smart_Phone_Daywork_App_UK_Construction_Industry.htm