Lisa,

I found a co-worker's resume in the copier and noticed that she lists some of my responsibilities as her own. I am so mad, I don't want her to get away with this, I know our boss does not know that she is looking for a new job, should I tell my boss about what my co-worker did?

Mad in Camden

Dear Mad,
Oh, what a predicament, seems to me like you have two options,
On the one hand, your work ethic and results are awesome as demonstrated by the fact that someone else would like to lay claim to them You could look at it as a form of a compliment. Way to go! You can ignore your coworker's resume, and bravely assume all will be vindicated in good time (Karma!). If she tries to bring your expertise to a new job, her actions will speak for themselves.

On the other hand, you certainly don't want someone else taking credit for your work, what if you both applied for the same job? Are you positive your co-worker is not simply exaggerating her own input on teamwork, rather than stealing yours?
It sounds like you are an honest, hard working person who's feelings have been seriously hurt, and if this event will weigh heavily on you, then have the Talk. Ask for a few minutes of your co-worker's time. Explain in straightforward, nonthreatening language that you are disappointed in her, use specific examples from the resume. Use phrases like" I feel, when I read this..."

Regardless of what you decide and the outcome, your work does speak for itself.
Thank you for your question, I hope my opinion helps, Lisa