A time estimation method and system. The method comprises performing a loop of one or more iterations. Each iteration is for calculating a remaining time duration (RD) for completing a process for performing tasks. The loop is performed until the RD equals zero. Each iteration comprises receiving first data related to a plurality of objects associated with the process. A time to complete each object of the plurality of objects (POT) is calculated based on the first data. A number of objects of the plurality of objects remaining in the process (OR) is calculated based on the first data. Second data related to a plurality of work units is received. The plurality of work units is comprised by the plurality of objects. Each work unit is associated with a different task of the tasks. The RD is calculated based on the POT, the OR, and the second data.