She is a columnist for Slate, where she writes the column The Bills. She is the author of Pound Foolish: Exposing the Dark Side of the Personal Finance Industry and the co-author of The Index Card: Why Personal Finance Doesn't Have to be Complicated,[1][2] and Office Mate: The Employee Handbook for Finding--and Managing--Romance on the Job.[3] Olen also contributed to The Maternal is Political: Women Writers at the Intersection of Motherhood and Social Change.[4]