Staff Productivity Evaluation System

I am looking for a comprehensive and effective idea to assess my staff members' job performance primarily focusing on productivity.

Key Aspects:
- I want to track all aspects of productivity including tasks completed, hours worked, and overall efficiency.
- The method of tracking should encompass a mix of software/tools, manual tracking, and performance reviews.

Skills and Experience:
- A deep understanding of productivity metrics and how to effectively measure them.
- Experience with performance management tools and software.
- Ability to devise a balanced and fair manual tracking system.
- Skills in creating comprehensive performance reviews.

Your proposal should ideally include a preliminary outline of your proposed tracking system and any relevant experience you have in this field.