NEW YORK (Reuters) - A full-time stay-at-home mother would earn $134,121 a year if paid for all her work, an amount similar to a top U.S. ad executive, a marketing director or a judge, according to a study released on Wednesday.

A mother who works outside the home would earn an extra $85,876 annually on top of her actual wages for the work she does at home, according to the study by Waltham, Massachusetts-based compensation experts Salary.com.

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