I'm going to try to get a meth head fired from work.
Why would you try to get a meth head fired?
Their performance at work is quite unsatisfactory, I'm going to find an opportunity.
How do you know they are a meth head? You should have some evidence to back up a claim like that.
I don't have any evidence but I know they are using it
I think you should find some solid evidence before you try to get them fired. Otherwise an innocent person may lose their job.