Alteration

A contract where the subcontractor agrees to complete a defined scope of work for a set price regardless of actual labour, equipment, or material costs incurred — meaning cost overruns come directly out of your margin. Unlike time-and-material agreements, these contracts reward efficiency but expose field service companies to significant financial risk if scope creep or unforeseen site conditions arise.

A legal claim registered against a property when a subcontractor hasn't been paid for work or materials provided. It secures your right to payment by encumbering the owner's title. Filing deadlines are strict, so act quickly if invoices go unpaid.

A contract clause that adjusts your billing rate when diesel or fuel prices shift beyond a set threshold. It protects subcontractors from absorbing sudden fuel cost spikes on long-term or remote field assignments. Negotiate the trigger percentage and index reference before signing.

A buffer of extra labour, equipment, or budget set aside to cover unexpected delays or scope changes on a project. Subcontractors use it to avoid cost overruns when field conditions shift. Typically expressed as a percentage of the total estimated project value.

A contract clause requiring the client to pay for a minimum volume of services or materials, whether used or not. For subcontractors, it provides revenue protection when a project slows down or scopes are cut. Negotiate these clauses carefully to ensure your standby rates and mobilisation costs are covered.

Clients committed to regular, ongoing work under standing agreements or master service contracts. For subcontractors, firm customers provide predictable scheduling and steady revenue. They reduce reliance on spot work and help justify keeping crews and equipment mobilised.

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