You can suspend or stop a job that is already running.
When you stop a job, it is suspended until you choose to resume it.
Suspending a job causes your job to go into USUSP state if the job is already started, or to go into PSUSP state if your job is pending.
By default, jobs that are suspended by the administrator can only be resumed by the administrator or root; users do not have permission to resume a job suspended by another user or the administrator. Administrators can resume jobs suspended by users or administrators. Administrators can also enable users to resume their own jobs that have been stopped by an administrator.