In project management, effort plays a decisive role in the most diverse evaluation criteria. It is a question of how much effort is required to achieve the project objective or a sub-objective.
In project management, effort is understood to be a quantifiable number of work units in which a planned activity, a subproject or the entire project is to be realized. Effort is usually expressed in hours, days, weeks or months, from which labor costs can be determined. It can refer to an individual employee or a team. Effort plays an important role in the determination of Earned Value( EV) and Earned Value Management( EVM), among other things.