A work management system includes an estimation unit that estimates a performed work amount based on a position of a portion of a work object to which a fluid is estimated to be blown while the work is performed. In addition, the work management system includes a first correction unit that compares a target passing position through which a fluid blowing device passes while the work is performed with a position of the fluid blowing device to determine whether the fluid blowing device has passed through the target passing position while the work is performed, and executes a first correction process of reducing the work amount estimated by the estimation unit when it is determined that the fluid blowing device has not passed through the target passing position.