Job failure conditions in 7.5?

I have a job where I have sub jobs and taks inside of it.  I want some of the jobs inside to fail and stop the overall job when they fail but others to continue forward.   I have the overall job unchecked to fail but then a couple sub jobs checked to fail.  I am seeing it continue regardless.  Any thoughts or suggestions on this?

Essentially

Overall Job  - set to not fail

    Sub job 1 - set to fail

    sub job 2 - set to fail

    sub job 3 - set to not fail

    task 1

    task 2

   end job

Can I make this job stop if anything in sub job 1 or 2 fails but not the rest?  

Do I need to make everything a sub job so I check the overall job to fail?