How the FLSA 8/80 Rule Actually Works for Nurses (2026 Guide With Paystub Examples)

By Jayson Minagawa, BSN, RN · Published April 13, 2026 · 12 min read

In 12+ years of bedside nursing — ICU, psych, corrections, telehealth, and travel — I have had exactly one nurse walk up to me at the time clock and confidently explain the 8/80 rule. One. And she was a union rep. Everyone else gets hired at a hospital, signs the offer letter, and assumes overtime works the same way it does at Target or their summer restaurant job: 40 hours a week, anything beyond is 1.5x. Then they look at their first paystub and something feels off.

The Fair Labor Standards Act has a special exemption for hospitals and residential healthcare facilities, and it rewires how overtime is calculated for nurses working 12-hour shifts. If your employer uses it correctly, you come out ahead of the 40-hour rule. If your employer uses it incorrectly — and I have seen that happen more than once — you can be short thousands of dollars a year without noticing. This guide walks through what the rule actually says, how to read your paystub against it, and what to do if the math doesn't work.

What the 8/80 rule actually is

The standard FLSA overtime rule in 29 U.S.C. § 207(a) is simple: non-exempt employees earn overtime (at least 1.5 times their regular rate) for any hours worked beyond 40 in a single 7-day workweek. The 8/80 exception, codified at 29 U.S.C. § 207(j), lets hospitals and establishments primarily engaged in the care of the sick, aged, or mentally ill elect a different overtime standard for nurses and other direct-care employees.

Under 8/80, the employer uses a 14-day work period instead of a 7-day workweek, and the nurse earns overtime for:

• Any hours worked in excess of 8 in a single day, OR
• Any hours worked in excess of 80 in the 14-day period
• Whichever calculation results in the higher overtime compensation, the employer must pay the higher amount.

Why 8/80 exists (and why it benefits 12-hour shift nurses)

Before the 1960s, most hospital nurses worked 8-hour shifts and 40-hour weeks. Then the 12-hour shift became standard in most hospitals, which created an accounting nightmare: a nurse working three 12-hour shifts in a single week clocks 36 hours (no overtime under the 40-hour rule). A nurse working four 12-hour shifts hits 48 hours and earns 8 hours of overtime. Swap shifts with a coworker and the numbers shift dramatically week-to-week.

Congress and the DOL wanted a rule that produced stable, predictable overtime pay for hospitals that run on 12-hour shifts and 3-on-2-off or 3-on-4-off rotations. 8/80 does exactly that: it smooths out the work-period math so a nurse working six 12-hour shifts in a 14-day period gets paid consistently regardless of how those shifts fall across calendar weeks.

How shift differentials interact with the 8/80 rule

This is where most paystub errors live. Under FLSA 29 U.S.C. § 207(e), "regular rate of pay" must include non-discretionary bonuses and shift differentials when calculating the overtime multiplier. That means if you earn $38/hour base plus a $4/hour night differential on every shift:

The DOL Wage & Hour Division Fact Sheet #23 is the official federal reference on regular-rate calculations. If you suspect your employer is calculating overtime off the base rate alone, print that fact sheet and bring it to payroll.

Three paystub examples, worked end-to-end

Example 1: Med-surg RN on three 12-hour shifts per week

Base rate: $36/hour. Shift pattern: three 12-hour days per week, no differentials, no overtime. Total: 36 hours worked in the 7-day week, 72 hours in the 14-day 8/80 period. No overtime triggered under either rule. Gross pay for the 14-day period: $2,592. This is the baseline every nurse should match their stub against.

Example 2: ICU RN picking up a fourth shift in one week

Base rate: $42/hour + $4/hour night differential. Shift pattern: three 12s in week 1 (36 hours), four 12s in week 2 (48 hours). Total: 84 hours in the 14-day period. Regular rate: $46/hour. Overtime hours: 4 (the amount over 80). Overtime rate: $46 × 1.5 = $69/hour. Gross pay: (80 × $46) + (4 × $69) = $3,680 + $276 = $3,956 for the 14-day period.

Under the 40-hour rule, this nurse would have earned 8 hours of overtime in week 2 (48 - 40). (40 × $46) + (8 × $69) + (36 × $46) in week 1 = $1,840 + $552 + $1,656 = $4,048. In this case the 40-hour method pays $92 more for the 14-day period, so the employer is required to pay the nurse at the higher 40-hour-rule amount under 8/80's "greater of" clause.

Example 3: Travel nurse on six 12-hour shifts in a 14-day period

Base rate (taxable): $30/hour + $5/hour night differential. Stipend (tax-free): $1,200/week for housing and M&IE. Shift pattern: six 12-hour shifts across 14 days. Total: 72 hours worked. Under 8/80 or 40-hour: no overtime triggered (under 80 and under 40 per week if split 3+3). Regular rate: $35/hour. Gross pay: 72 × $35 = $2,520 W-2 taxable + $2,400 stipend = $4,920 total. This is the baseline a traveler should verify on their agency paystub.

If that same traveler picks up an extra 12-hour shift in week 2 (splitting shifts as 3 in week 1 and 4 in week 2), the math changes: 40-hour-rule says 8 hours of OT in week 2; 8/80 says 4 hours of OT (since 84 − 80 = 4). The nurse must be paid at the higher method. Travel contracts often lock in one calculation method; read your contract carefully.

Common 8/80 paystub errors and how to catch them

• Differentials not rolled into the regular rate. If your OT line shows a flat $X per hour and you know you have shift differentials, reverse-engineer the math. OT should be (base + all applicable diffs) × 1.5.
• Employer pays the lower of the two methods. 8/80 requires "greater of." Some payroll systems default to 8/80 and never cross-check the 40-hour calculation. Ask HR for both numbers in writing.
• Holiday, charge, and preceptor pay excluded. Non-discretionary premiums are part of regular rate. Discretionary bonuses (spot awards, sign-on bonuses not tied to hours) are not.
• On-call time not counted. If you are required to stay on-site, on-call is hours worked. If you are free to use the time as you wish and just need to respond within a reasonable window, it may not be. Facility policy and state law both matter here.
• Rounding down. Clock-in and clock-out rounding to the nearest 15 minutes is legal only if it averages out in the employee's favor over time. Consistent rounding down is a wage violation.

What to do if you think your 8/80 pay is wrong

1. Document everything. Pull 3 months of paystubs, 3 months of time punches, and your offer letter or union contract. Save them to a personal drive, not a work email.
2. Run the numbers yourself. Use the nurse overtime calculator to verify the 8/80 and 40-hour outputs. Include every differential.
3. Ask payroll for the calculation method in writing. Do not accept verbal explanations. A written response protects you and surfaces whether payroll actually knows the rule.
4. Escalate to HR and, if needed, your union rep. Wage claims are a normal workplace issue and most facilities resolve them without drama. Use email, not Slack or in-person conversations, so there is a paper trail.
5. If internal escalation fails, file a wage claim with your state Department of Labor or the federal DOL Wage & Hour Division. WHD investigations are confidential and retaliation is illegal under FLSA. Claims can typically cover up to 2 years back pay, or 3 years for willful violations, plus liquidated damages.

State laws that layer on top of 8/80

FLSA is the federal floor. Several states have stricter rules that nurses should know about:

• California: Daily overtime kicks in after 8 hours (paid at 1.5x) and after 12 hours (paid at 2x). CA hospital nurses working 12-hour shifts frequently earn more under state law than under 8/80.
• Alaska, Nevada: Daily overtime thresholds similar to California for employers of a certain size.
• Colorado: Daily overtime after 12 hours per state law.
• New York, Massachusetts, Washington: Follow federal FLSA but layer on strong whistleblower and retaliation protections for wage complaints.

Always check your state Department of Labor site for current overtime rules. When state and federal rules differ, the employer must follow the more generous.

Related reading

• Nurse Overtime Calculator — run both 8/80 and 40-hour methods with differentials
• Shift Differential Calculator — see how night, weekend, and holiday diffs affect your effective rate
• Nurse Paycheck Calculator — model federal, state, and FICA on your gross pay
• Travel Nurse Stipend Calculator — see the tax-free portion of your bill rate
• Travel Nurse Tax Home Guide — the companion IRS Pub 463 walkthrough
• Travel Nurse Tax Guide — deeper dive into multi-state tax filing

Sources

• 29 U.S.C. § 207 — Fair Labor Standards Act, maximum hours and the 8/80 exception at subsection (j)
• DOL WHD Fact Sheet #23 — Overtime pay requirements and regular rate calculations
• DOL WHD Fact Sheet #54 — Healthcare industry overtime rules
• BLS OES 29-1141 — Registered Nurses wage data