Purpose
The Effort & Duration Estimation Sheet Template provides a standardized format for documenting and validating work package estimates in Memorres projects. Its purpose is to ensure lean PM teams (1–3 members) can capture realistic effort (person-hours/days) and duration (calendar time) for each WBS element in a transparent and auditable manner.
Estimation errors are a major cause of project overruns. Overly optimistic estimates result in missed deadlines, while inflated estimates lead to resource inefficiency and sponsor mistrust. This template mitigates those risks by combining structured estimation practices with ownership, assumptions, and approval records. It supports Project Managers in making defensible commitments and facilitates better scheduling, resource planning, and risk management.
For Memorres, where projects run with lean resources and compressed timelines, this template ensures every estimate is tied to a specific WBS work package, validated against assumptions, and aligned with the chosen estimation method (Expert, Analogous, or 3-Point). It also provides visibility for sponsors and PMO, enabling oversight and governance of the estimation process.
Scope
This template applies to all projects managed by the Memorres Project Management Department. It is mandatory during the Planning phase, after the WBS & Dictionary are approved and before schedules or resource plans are finalized.
The scope of this template includes capturing effort and duration estimates for every work package, recording the estimation method used, identifying assumptions or constraints, and documenting ownership and approval. It ensures that all estimates are evidence-based and traceable.
The template excludes detailed engineering estimates (e.g., agile story-points, technical sizing models), which are team-specific practices. Responsibility for maintaining this sheet lies with the Project Manager. SMEs and stakeholders provide inputs, while the Sponsor/PMO validates and approves estimates before baseline schedules are developed.
Main Section
Table 1: Header Fields
| Field | Description | Example |
| Project Title | Name of the project | “Client Portal Modernization” |
| Estimation Version | Document version | v1.0 |
| Prepared By | Project Manager | [PM Name] |
| Date | Date of preparation | 22-Sep-2025 |
| Approved By | Sponsor/PMO | [Sponsor Name] |
| Approval Date | Date of approval | 24-Sep-2025 |
Table 2: Effort & Duration Estimation Register
| WBS ID | Work Package Title | Estimation Method (Expert/Analogous/3-Point) | Effort Estimate (Person-Hours/Days) | Duration Estimate (Calendar Days) | Assumptions/Constraints | Owner | Status | Example |
| 1.1 | Requirements Baseline | Expert | 80 hrs | 10 days | SME availability confirmed | PM | Approved | Req Spec in 2 weeks |
| 1.2.1 | UI Wireframes | 3-Point (O=20, M=30, P=50 → 32 hrs) | 32 hrs | 5 days | Assumes timely feedback | Design Lead | In Progress | Wireframes draft in 5 days |
| 1.2.2 | Final UI Design | Analogous | 60 hrs | 7 days | Based on past portal project | Design Lead | Planned | Mockups approved in 7 days |
| 1.3 | User Training Materials | Expert | 40 hrs | 6 days | Assumes access to SMEs | Training Coordinator | Not Started | Manuals delivered Q4 |
Table 3: Approval Record
| Approver | Role | Signature/Date | Example |
| [Sponsor Name] | Project Sponsor | [Signed 24-Sep-2025] | CIO sign-off |
| [PM Name] | Project Manager | [Signed 22-Sep-2025] | PM signature |
Closing Note & Cross-References
The Effort & Duration Estimation Sheet Template ensures that all work package estimates are documented, validated, and approved before baseline schedules are developed. It provides lean PM teams with a lightweight yet disciplined tool to manage estimation governance. Once signed-off, this sheet must be stored in MIC and referenced throughout planning and control.