N.
You don't mention if that's $55/week or $55/month. If that's per week, that would equate to about $238 extra per month. That's a car payment for some people or an electric bill. If you are really diligent about not spending your income on "extras" like eating out for lunch, then it might be worth it if your family is stretched for cash and needs a little help paying your bills. If it's just $55/month, did you factor in if you will need any new clothes for your job or how much extra gas you will be using during the week? Will any of your work clothes need to be dry cleaned? There are also incidentals when you work like when a co-worker has a birthday, baby shower, wedding shower, death in the family, etc. Usually, people are expected to "chip in" for gifts and such. There are also pot-lucks and/or gift exchanges. Working definitely "costs" more than staying home so make sure you've calculated including all those "extras" and maybe that will help you to make your decision.
Good luck!