In some examples, a service provider may determine from a shift schedule that a first employee is scheduled to work a particular shift at a business within a threshold period of time. The service provider may determine, based on a location of a first mobile device of the first employee, that the first employee is unlikely to arrive at the business in time for the start of the particular shift. In response, the service provider may find a replacement employee to fill the shift of the first employee. For instance, the service provider may send the communication to a second mobile device associated with a second employee that is determined to be within a threshold distance of the business. Alternatively, if the service provider determines that the business is overstaffed on a particular day, the service provider may offer a selected employee an incentive to depart work early.