Laravel控制台命令未按预期重叠

Question

I have a Laravel 5.2 job that runs every minute:

$schedule->command('bii:workorder-post-process')
    ->everyMinute();

It's a job that runs for several minutes on each execution, handling record locking inside the script itself.

My expectation is that the job WILL overlap and pick up additional records for processing every minute. That is the desired behavior. However, the job will not spawn again until the first instance completes.

I suspect I am missing a parameter of some sort, but cannot find anything to allow concurrent jobs to run.