Job has not started notifications

I need to notify operators when 24x7 file-watch jobs have not started after a certain time.

Essentially the logic needs to go like this;
if current time goes beyond a defined late shout time for a particular job, and that job has not run in this processing day (may cross midnight) then send an email or whatever.

Whats the best way to do that? particularly around whether the job has run successfully.

thanks

1. Set your file-processing job to write its run time in some file. (.INI file for example).
2. Create a second time-based job to run when you want to alert staff and make it read the value from the .INI file. If that value is out of valid range, make it to send an alert.