Hiring a full-time nanny is one of the biggest childcare decisions you'll make, yet many families skip a proper trial period and regret it later. A structured trial lets you assess whether the nanny's actual day-to-day performance matches your expectations—and whether your family's dynamic truly clicks. Here's how to run an effective trial that protects everyone involved.
Why a Trial Period Matters
A trial isn't just a formality; it's your safety net. During the first few weeks, you'll spot communication gaps, scheduling conflicts, and personality mismatches that interviews never reveal. You'll also see how your nanny handles real situations—a sick child, a meltdown, a change in routine—rather than hypothetical scenarios. Most importantly, your children need time to adjust and bond with someone who'll be in their lives 40+ hours weekly.
Recommended Trial Length
Plan for 4 to 6 weeks as a standard trial period for full-time nannies. This timeframe is long enough to see recurring patterns but short enough to make a clean exit if things aren't working. Some families do 2-week trials, but that rarely reveals much beyond first-impression behavior. Conversely, trials longer than 8 weeks can create ambiguity about whether you're still evaluating or already committed.
Document your trial timeline upfront in writing. Specify the start date, end date, and what "successful completion" looks like (e.g., regular attendance, positive feedback from kids, no safety concerns).
What to Observe During the Trial
Focus on concrete, observable behaviors rather than gut feelings:
- Reliability: Does the nanny arrive on time consistently? How does she handle schedule changes?
- Safety practices: Does she buckle car seats correctly? Does she watch your toddler by the door or in the yard unsupervised?
- Communication: Does she proactively update you on your child's day, or do you have to ask?
- Problem-solving: When your child refuses lunch or has a tantrum, how does she respond?
- Age-appropriate care: For infants, check diaper-change frequency and sleep routines. For older kids, observe screen time boundaries and educational engagement.
- Household management: If included in her duties, note whether dishes pile up, laundry gets folded, or bathrooms stay clean.
Keep brief daily notes. A simple "Great day—kids happy, house tidy, good communication" or "Concerned about screen time—kids on tablet for 3 hours" creates accountability and prevents memory bias.
Payment and Legal Setup During Trial
Pay your nanny for trial hours at the agreed rate—typically $18–$28 per hour for experienced full-time nannies, depending on your region and the nanny's qualifications. This isn't a discounted "test period" for her; she's providing real work.
Before the trial starts, complete a basic background check and verify references. You should also have a simple written agreement outlining trial terms, hours, pay, and what happens if either party wants to exit. Many families use household employment agencies or platforms like Care.com to streamline this; Mercoly helps you compare and find trusted full-time nanny providers in one place, making it easier to vet candidates before trial even begins.
Clarify your tax obligations. Even during a trial, if you're paying someone to work in your home, you may owe payroll taxes and employment insurance depending on your state.
Red Flags That End a Trial Early
Some issues warrant ending the trial before the full period:
- Unexplained absences or chronic lateness
- Safety violations (leaving a child unsupervised, unsafe sleep positions, rough handling)
- Dishonesty about qualifications, references, or availability
- Verbal or emotional harshness toward your child
- Refusal to follow your parenting rules or routines
- Signs of substance abuse or inappropriate behavior
Trust your parental instinct here. If something feels unsafe or wrong, don't wait out the trial.
Moving Forward After Trial Success
If the trial goes well, transition to your formal employment agreement by week 5 or 6. Document any adjustments to hours, duties, or pay that you've negotiated during the trial. Schedule a conversation about longer-term expectations—career development, flexibility, raise timelines—to set a positive tone for the ongoing relationship.
Frequently Asked Questions
Q: Can I reduce the nanny's hours or responsibilities during the trial to test whether she can handle a lighter load first? A: Yes, but it's not representative of the full-time role. If you need a part-time trial first, be transparent about that with the nanny; many prefer knowing upfront.
Q: What should I do if the nanny is great but my child doesn't bond with her yet by week 3? A: This is normal. Children need 2–4 weeks to warm up; bonding isn't instant. Unless there's a safety issue, give it the full 4–6 weeks before deciding attachment hasn't formed.
Q: Can I ask the nanny to sign a non-compete clause during the trial? A: That's legally risky and unnecessarily adversarial during an evaluation period. Wait until after the trial to add such terms to a permanent contract.
Start your search by comparing vetted full-time nanny candidates in your area.