Risk Interdependencies

Action Possible Benefit Risk
Work overtime Schedule compression More mistakes; higher cost and longer schedule
Add resources Schedule compression Higher cost and learning curve shift
Parallel work Schedule compression Rework and higher costs
Reduce scope Schedule compression and lower cost Unhappy customer and no follow-on work
Hire low-cost resources Lower cost More mistakes and longer time period
Outsource critical work Lower cost and schedule compression Contractor possesses critical knowledge at your expense

Source: Project Management: A Systems Approach To Planning, Scheduling and Controlling by Harold R. Kerzner