Seesaw is correct. You have to be the person to assert control in that situation, and redirect the focus of your grievance.

I've filed multiple grievances (2 different companies) and neither of them went the way I'd like them to have gone, but they didn't backfire on me terribly. It did however, allow me to establish a paper train on them even though one company tried to counter me by saying I was always tardy (coworkers were able to refute this, but no one listened to them). The other company was more serious. I filed a complaint citing harassing and sexist behavior from my supervisor and it was actually a scary thing to do. Those are not allegations anyone ever wants to make lightly, but the company itself had a paper trail of this supervisor's behavior-- and they did nothing! He still got to work there, and later on I was the one whose position was eliminated from a restructuring.

You have to be the one to know what your rights are and to be very specific about your complaints. I would like to say if there's an issue, the first thing to do is to request a meeting with your supervisor, document it, and take it from there. It is imperative we all take the steps to document our efforts and protect ourselves. If it gets really bad, it is time to find a new job. A lot of workplaces are toxic environments.