Scope Addendum
Concise description of the additional PM and UX tasks, referencing original SOW section numbers or deliverables to avoid ambiguity.
A clear addendum reduces scope disputes by documenting extra hours, cost, and schedule impact before work begins. It helps billing accuracy and preserves project governance.
Typical participants include internal project and UX leads plus the client's authorized approver who confirm scope, hours, and fees.
Keep approvers to the roles listed in the original agreement to avoid invalid signatures or billing disputes.
Concise description of the additional PM and UX tasks, referencing original SOW section numbers or deliverables to avoid ambiguity.
Number of additional PM and UX hours requested per role with task-level breakdown to support billing and scheduling.
Hourly rates or fixed fees per role, including any overtime rates, expenses policy, and currency designation.
Estimated changes to milestone dates, critical path items affected, and any contingency for further delay.
Designated signers, their titles, and explicit signature blocks that record date and printed name for attribution.
Contract reference (SOW/PO number), attachment list, and versioning to ensure clear contract integration.
| Field | Configuration |
|---|---|
| Authentication | Email plus optional SMS code for signer verification |
| Conditional Fields | Show hours and rate fields only when 'Additional Work' checked |
| Auto-calc Total | Formula field multiplies hours by rate for each role |
| Template Library | Save approved template to shared library for reuse |
Use a platform that supports secure e-signatures, audit trails, and the document formats your team uses.
Ensure the chosen system preserves an immutable audit trail (timestamps, IP, signer identity) and supports role-based access controls for secure storage.
Submit change request within 30 days of scope change
Allow 3–5 business days for PM and finance review
Client approval expected within 10 business days
Apply approved charges on the next invoice cycle
Store signed addendum within 48 hours of execution
| signNow | DocuSign | Adobe Sign | PandaDoc | HelloSign | |
|---|---|---|---|---|---|
| Starting Price | $8/user/mo | $15/user/mo | $14/user/mo | $19/user/mo | $15/user/mo |
| Free Trial | Yes, 7-day trial | Varies by plan | Varies by plan | Varies by plan | Varies by plan |
| Bulk Send | Yes | Yes | Yes | Yes | No |
| Audit Trail | Yes | Yes | Yes | Yes | Yes |
| HIPAA Compliant | Yes | Yes | Yes | No | No |
| Envelope Cap | No envelope cap | 100 envelopes/user/year | Varies by plan | Varies by plan | Varies by plan |