A pay period is the recurring stretch of time your employer uses to track the hours you work and calculate what you’re owed. It might be a week, two weeks, half a month, or a full month, and the choice shapes how often a paycheck lands in your account, how much federal tax comes out of each one, and when overtime shows up. Understanding what a pay period is matters because the Fair Labor Standards Act doesn’t set a national pay frequency; the rules that govern when you get paid are almost entirely a matter of state law.
The Four Common Pay Period Schedules
Most U.S. employers run payroll on one of four schedules. Each produces a different number of paychecks a year, and each affects the size of an individual check differently depending on whether you’re salaried or hourly.
- Weekly pay runs on a seven-day cycle, usually Sunday through Saturday, and produces 52 paychecks a year. It’s common for hourly workers in construction, retail, and hospitality because it keeps the gap between work and payment short.
- Biweekly pay runs on a 14-day cycle and produces 26 paychecks a year. Because the calendar doesn’t divide evenly, biweekly workers occasionally see 27 paychecks in a single year, which can affect per-check benefit deductions and retirement contributions.
- Semimonthly pay uses two fixed dates each month, often the 1st and 15th or the 15th and last day, producing exactly 24 paychecks a year. It aligns neatly with monthly bills but can create uneven check amounts for hourly workers, since the number of working days between paydays varies.
- Monthly pay delivers one check covering the entire month, for 12 payments a year. It’s less common for hourly workers and more typical for salaried exempt employees, executives, and contractors. Federal rules allow exempt salaried employees to be paid weekly or less frequently, so monthly pay is permissible under the salary basis test.1eCFR. 29 CFR 541.602 – Salary Basis
For a salaried worker earning $60,000 a year, a biweekly check is roughly $2,308 before taxes and a semimonthly check is $2,500. The annual total is identical; only the per-check amount changes.
Pay Period vs. Payday
The pay period and the payday are not the same thing. The pay period is the block of time you actually work and accumulate earnings, say January 1 through January 14. The payday is the date the money lands, perhaps January 21. The gap exists because payroll needs time to verify timesheets, calculate withholdings, process benefit deductions, and confirm leave. That processing lag commonly runs five to ten business days.
Being paid this way is sometimes called paying “in arrears.” If you start a new job on the first day of a biweekly pay period, your first check may not arrive until roughly three weeks after your start date: two weeks of work plus the lag. Federal law doesn’t require overtime to be paid in the same week it’s earned; it only requires that overtime appear in the paycheck covering the pay period when the extra hours occurred.2eCFR. 29 CFR 778.106 – Time of Payment
Who Sets How Often You Get Paid
A common assumption is that federal law dictates pay frequency. It doesn’t. The Fair Labor Standards Act sets rules for minimum wage and overtime but is silent on how often wages must be delivered.3eCFR. 29 CFR Part 531 – Wage Payments Under the Fair Labor Standards Act of 1938 Pay frequency is almost entirely a state matter, and the rules vary.
The U.S. Department of Labor publishes a chart of state payday requirements. Most states require at least semimonthly pay for most workers; a smaller group requires weekly or biweekly pay for certain categories, such as manual laborers.4U.S. Department of Labor. State Payday Requirements A handful of states, including Alabama and Florida, set no pay frequency at all and leave the schedule to employers. Many states also apply different rules depending on whether you’re hourly, salaried exempt, or in a specific industry. If your employer wants to change the schedule, most states require advance written notice.
How Pay Frequency Affects Your Tax Withholding
Your pay frequency doesn’t change the total federal income tax you owe for the year, but it does change how much is withheld from each paycheck. The IRS publishes withholding tables in Publication 15-T organized by payroll period: weekly, biweekly, semimonthly, monthly, and others.5IRS. Publication 15-T (2026), Federal Income Tax Withholding Methods Your employer picks the table matching your schedule and calculates each check accordingly.
In practice, a weekly worker sees smaller withholding amounts spread across 52 checks; a monthly worker sees larger amounts drawn from 12. With identical W-4 selections, the year-end total should come out about the same. The exception is a biweekly year with 27 paychecks instead of 26. That extra check can push earnings past thresholds for certain taxes and can affect flat-dollar deductions for health insurance or retirement contributions, since those come out of each individual check.
How Pay Periods Interact With Overtime
Whatever pay period your employer uses, overtime is always calculated on a workweek basis, not on the pay period. Federal law defines a workweek as a fixed, recurring 168-hour stretch: seven consecutive 24-hour periods.6eCFR. 29 CFR 778.105 – Determining the Workweek The workweek can begin on any day and at any hour, but once your employer sets it, it stays fixed unless a change is permanent and not designed to sidestep overtime.
Under the FLSA, any non-exempt employee who works more than 40 hours in a single workweek must be paid at least one and a half times their regular rate for every hour beyond 40.7Office of the Law Revision Counsel. 29 USC 207 – Maximum Hours Your employer can’t average hours across two or more weeks to avoid paying it. Each workweek stands alone.8eCFR. 29 CFR 778.104 – Each Workweek Stands Alone
Here’s what that looks like. Say you’re paid biweekly and you work 50 hours one week and 30 the next. Your employer owes you 10 hours of overtime for the first week, even though the two-week average is 40 hours. The pay period length simply doesn’t enter the calculation. What matters is how many hours you actually worked in each seven-day workweek.
Payroll Records and Pay Stubs
Federal law requires your employer to keep detailed payroll records for every employee covered by the FLSA. Those records must include your full name, home address, hourly rate, hours worked each workday and workweek, total straight-time and overtime earnings, all deductions, total wages paid each pay period, and the dates each payment covers.9eCFR. 29 CFR Part 516 – Records to Be Kept by Employers For exempt salaried workers, the rules are lighter: employers don’t have to track hourly rates or daily hours, but they must document the basis of pay and total compensation each pay period. Basic payroll records must be kept at least three years; supplementary records like time cards and schedules must be kept at least two.
One thing worth knowing: federal law requires employers to keep those records, but it does not require them to give you a copy. Whether you receive an itemized pay stub is a matter of state law. Roughly 42 states require some form of written or electronic pay statement, and most mandate that it show gross wages, itemized deductions, and net pay. In a state without a pay stub requirement, you may need to request your records from your employer directly.
When You Should Get Your Final Paycheck
Federal law does not require your employer to hand you a final paycheck the moment you leave. Under the FLSA, your last check must be issued by the next regular payday for the final pay period you worked.10U.S. Department of Labor. Last Paycheck Many states set tighter deadlines. Some require payment within 24 to 72 hours of separation; others allow until the next regular payday. In several states, the deadline depends on whether you were fired or quit.
Unused vacation is a separate question. The FLSA doesn’t require employers to pay out accrued vacation when you leave; it treats the payout as a matter of agreement between you and your employer.11U.S. Department of Labor. Vacation Leave Many states, though, require a payout if the employer’s policy or your contract promises one. If your regular payday for your last pay period has passed and no payment has arrived, you can file a complaint with the Department of Labor’s Wage and Hour Division or contact your state labor department.