Is there a way to delete my work account from my iPhone?

I signed into my work account on my phone to get emails on it. I want to get it off my phone because it's making me need to change my phone password and stuff. I go to settings > mail > accounts but there's no option to delete or remove it. I can delete my gmail. But my gmail isn't what's causing me strife.

[Re-Titled by Moderator]