example.php

<?php

interface Job
{
    /**
     * @throws JobException
     */
    public function do(): void;
}

class Job1 implements Job
{
    public function do(): void
    {
        $user = $this->repo->get(1);
        if ($user === null) {
            throw new JobException('No user provided');
        }
        
        // actual job
    }
}

class Job2 implements Job
{
    public function do(): void
    {
        try {
            $user = $this->repo->get(1);
        } catch (UserNotFoundException $e) {
            throw new JobException('No user provided');
        }
        
        // actual job
    }
}