Effort refers to the number of labor units required to complete a task, activity or project, and are often called ‘man-hours’. Effort is usually expressed as either
In project management, estimating the effort required to complete a task or activity in a project serves as a foundation to determine the duration of said tasks, activities and therefore the project. If e.g. a project must be completed within 3 weeks and each work week is defined as having 5 work days with 8 hours each, but the effort required for completing all the tasks exceeds these limitations, the consequences are either
Each change automatically affects what is known as the Project Triangle: scope, time, and cost.