1. A method comprising: receiving a workload plan of jobs, wherein the workload plan of jobs includes a critical job and a predecessor job, wherein the predecessor job must complete execution before the critical job can begin execution, and wherein the critical job must be completed by a deadline; monitoring execution of jobs in the workload plan; determining an ability of the critical job to complete its execution before the deadline based on an execution status of the predecessor job; and updating a risk level assigned to the critical job based on the determination, wherein said risk level is updated before execution of the critical job begins; wherein the critical job and the predecessor job are in a critical path comprising one or more successor jobs which are successors to said predecessor job and must complete execution before the critical job can begin execution.