What must be obtained before a contractor can proceed with work in a Change Order?

The requirement to obtain written notification to commence work from the City's Project Manager before proceeding with any work in a Change Order is critical for several reasons. Firstly, this written communication establishes official authority and acknowledgment from the City regarding the scope of changes and the start of any additional work. This formal approval protects all parties involved by ensuring that there are clear, documented instructions regarding the modification of the original contract. It also helps to avoid disputes that might arise from misunderstandings about what work is authorized and when it should commence.

This practice aligns with contract management principles, where clear and documented communication helps maintain accountability and facilitate smooth project execution. Additionally, having written approval creates a record that can be referenced if any issues arise during or after the work is completed, which is essential for avoid disputes related to project scope, costs, and responsibilities.

The other options do not provide the same level of formality or clarity required by project management standards. Oral approvals can lead to confusion and miscommunication, while informal notifications from subcontractors or internal management lack the official endorsement from the City, which is key in formalized agreements.