Hi everyone! I'd strongly encourage you to read IRS Publication 926, which explains the various requirements of anyone who hires someone to work in their home (nanny, housekeeper, babysitter, chauffer, chef, personal assistant etc.).
It is extremely important that you abide by Federal and State laws as a household employer to avoid hefty penalties/fines in the event of an audit. They do happen!
And for those who do not see the benefit of putting an employee "on the books," here are some things to keep in mind:
https://gtm.com/household/benefits-of-being-paid-on-the-books/.
Hope this helps. Please feel free to contact GTM with any questions!