1. A document collaboration system comprising: a processor; scheduling instructions executable on the processor to: receive a request from a user for collaborative editing or collaborative reviewing of a section of an electronic document during a schedule time slot selected by the user; retrieve a schedule of the user; ascertain whether the section of the electronic document is unavailable for the collaborative editing or the collaborative reviewing during the selected schedule time slot; in response to ascertaining that the section of the electronic document is unavailable for the collaborative editing or the collaborative reviewing during the selected schedule time slot, propose a different schedule time slot for the user to perform the collaborative editing or the collaborative reviewing of the section of the electronic document; and in response to ascertaining that the section of the electronic document is available for the collaborative editing or the collaborative reviewing during the selected schedule time slot, determine availability of the user during the selected schedule time slot based on the retrieved schedule and in response to the determining, allow access to the user for the collaborative editing or the collaborative reviewing of the section of the electronic document for the selected schedule time slot.
6. The document collaboration system as claimed in claim 1 further comprising work selection instructions executable on the processor to: receive a user input indicative of the user's preference to perform a task associated with the collaborative editing or the collaborative reviewing; generate an interface to prompt the user to select a schedule time slot for performing the task; ascertain whether the selected schedule time slot for performing the task complies with a chronological order in which the task has to be performed; and generate a response for the user to select a new schedule time slot in response to ascertaining that the selected schedule time slot for performing the task does not comply with the chronological order.