Most people start maternity leave between 1 and 4 weeks before their due date, though the right timing depends on your job’s physical demands, your health, your finances, and how much leave you have available. There’s no single “correct” week to stop working. The goal is to balance preserving as much post-birth recovery time as possible with the reality that late pregnancy can make working difficult or unsafe.
How Your Job Affects the Timing
The physical demands of your work are one of the biggest factors in deciding when to stop. If your job involves heavy lifting (anything over about 22 pounds), prolonged standing, frequent bending, or working with your hands above your shoulders, you’re more likely to need an earlier start. Research on pregnancy and occupational demands found that heavy lifting can increase the risk of functionally limiting pelvic pain by 21% to 45%, depending on how frequently you’re lifting. Prolonged standing and walking more than doubled the likelihood of stopping work early.
Desk jobs with flexible schedules or remote work options allow many people to work closer to their due date, sometimes right up to 39 or 40 weeks. If you can control your pace, take breaks, and avoid long commutes, working later is more feasible. But even in sedentary roles, the last few weeks of pregnancy bring fatigue, difficulty concentrating, swelling, and frequent bathroom trips that can make a full workday exhausting.
Medical Reasons to Start Leave Earlier
Certain pregnancy complications make early leave a medical necessity rather than a choice. High blood pressure (including preeclampsia), vaginal bleeding, preterm labor symptoms, and a history of previous preterm birth are among the most common reasons doctors advise stopping work sooner. In one study of pregnant workers in Georgia, about 13% of women who were advised to stop work early had labor complications, high blood pressure, or vaginal bleeding. Another 7% were told to stop due to significant swelling, fatigue, or stress. Hospitalization during pregnancy more than doubled the likelihood of receiving this recommendation.
If you’re placed on bed rest or activity restrictions, your leave timeline is essentially set by your provider. In these cases, short-term disability insurance (if you have it) typically kicks in after an elimination period of 14 to 30 calendar days, so factor that waiting period into your planning.
Federal Leave Protections Under FMLA
The Family and Medical Leave Act provides up to 12 weeks of unpaid, job-protected leave per year. To qualify, you need to have worked for your employer for at least 12 months, logged at least 1,250 hours in the past year (roughly 24 hours per week), and work at a location where your employer has at least 50 employees within 75 miles. Public agencies and public schools are covered regardless of size.
FMLA leave is unpaid, and it covers both prenatal medical needs and postpartum recovery. This means any time you take before delivery counts against your 12-week total. If you start leave two weeks before your due date, you’ll have about 10 weeks left afterward. This tradeoff is why many people try to work as late as they can: every pre-birth week is a post-birth week you won’t have.
Some states offer paid family leave programs that supplement or extend FMLA. California, New York, New Jersey, Washington, Massachusetts, Connecticut, Oregon, Colorado, Maryland, and a few others have enacted paid leave laws with varying durations and wage replacement rates. Check your state’s labor department for specifics, because these programs can significantly change your math.
Why Postpartum Weeks Matter Most
Physical recovery after birth takes a minimum of six to eight weeks. If you have a cesarean delivery, skin healing takes about 10 days, but the deeper tissue can take up to 12 weeks to fully heal. Even after a vaginal delivery, most people need several days before they can comfortably walk and move normally. This recovery period is the core reason to protect as many post-birth weeks as possible.
Beyond physical healing, the length of time you’re home after birth has a measurable effect on breastfeeding. Women who returned to work within 1 to 6 weeks postpartum had the lowest breastfeeding initiation rate (63.3%), while those still home at 9 months had the highest (71.9%). The most striking finding involves exclusive breastfeeding: women who returned to work at 13 weeks or later were roughly twice as likely to continue predominant breastfeeding past 3 months compared to those who returned within the first 6 weeks. That gap held even after adjusting for income, education, and other factors.
Longer leave also appears to benefit infant health. Research on the effects of FMLA found that access to maternity leave was associated with a 3% decrease in the likelihood of premature birth and low birth weight, and a 10% decline in infant mortality rates, though these benefits were strongest among college-educated and married mothers who were most able to use unpaid leave.
A Practical Approach to Choosing Your Date
Start by mapping out exactly how much paid and unpaid leave you have available. Combine FMLA time, any state paid leave, employer-provided leave, accrued vacation or sick days, and short-term disability benefits into one timeline. Then decide how much of that total you want to use before versus after birth.
For a healthy, uncomplicated pregnancy in a non-physical job, many people aim to work until 38 or 39 weeks and start leave at or just before their due date. If your job is physically demanding, 36 to 37 weeks is a more common stopping point, and some people with heavy lifting or prolonged standing roles stop even earlier based on medical guidance. Keep in mind that babies don’t always arrive on schedule. About 1 in 4 first-time mothers deliver after their due date, so building a buffer of a few days can prevent the stress of going into labor at work.
Talk to your employer about your plans at least a few weeks before your intended start date. Many workplaces need time to arrange coverage, and giving advance notice can help you negotiate flexibility, like shifting to remote work or reduced hours in the final weeks instead of taking full leave.
Budgeting for Time Off
If any portion of your leave is unpaid, you’ll need savings to cover the gap. Start by calculating your regular monthly expenses: housing, food, utilities, insurance premiums, transportation, and any existing debt payments. Then add the costs specific to having a baby. Out-of-pocket costs for pregnancy, delivery, and postnatal care can reach as high as $20,000, though most people with insurance pay significantly less. On top of medical bills, you’ll have new recurring expenses like diapers, feeding supplies, and eventually childcare when you return to work.
Add up your expected income during leave (disability payments, paid leave benefits, any partner income) and subtract your total monthly expenses. The difference is what you need in savings for each unpaid month. Many financial planners suggest starting to set aside money by the second trimester so you have a cushion built by your third. If the numbers are tight, that’s another factor pushing toward a later leave start date, since every extra week of paychecks helps.