Morewerken

Morewerken, commonly referred to in Dutch as meerwerk, is the term used for additional work that is required or requested beyond the scope of an original contract. It is most often encountered in construction, engineering, IT projects, and other contract-based services, where the client or designer alters requirements, specifications, or conditions after work has begun.

Morewerken covers tasks, materials, or activities that were not included in the initial scope or price. Common reasons include design changes, unforeseen site conditions, regulatory updates, or clarified performance criteria. The additional work is typically formalized through an instruction or change order, which documents the new scope, price, and schedule. This helps distinguish meerwerk from routine adjustments and from outright new contracts.

Pricing for meerwerk is usually set by time-and-materials, unit rates, or a revised lump-sum price agreed in the change order. The contract should specify measurement methods, acceptance criteria, and the timing of payment. Both client and contractor bear responsibilities: the client authorizes the extra work and provides necessary information, while the contractor records work performed and materials used.

To minimize disputes, meerwerk should be documented promptly, with clear scope, price, and schedule implications, and changes should be approved in writing. Proper governance and change-control processes help ensure that additional work is integrated smoothly without compromising project objectives.

See also: change order, variation, contract amendment.