The Regular Rate Isn't Your Base Rate
Most healthcare workers know that overtime pays 1.5x their hourly rate. What many don't realize is that the "rate" in "1.5x your rate" isn't just your base hourly rate — it's your regular rate, which includes shift differentials.
Under the Fair Labor Standards Act (FLSA) §778, the regular rate is calculated by dividing your total straight-time earnings for the week by the total hours worked. Differentials are included in that total.
A Real Example
Say you work 44 hours in a week:
- Base rate: $30/hr
- Night differential: $5/hr flat (you worked 24 night hours)
- Weekend differential: 10% of base ($3/hr, you worked 12 weekend hours)
Step 1: Total straight-time earnings
- Base: 44 hours × $30 = $1,320
- Night diff: 24 hours × $5 = $120
- Weekend diff: 12 hours × $3 = $36
- Total: $1,476
Step 2: Regular rate
- $1,476 ÷ 44 hours = $33.55/hr
Step 3: OT premium
- You get an extra half-rate for the 4 OT hours
- 4 × ($33.55 × 0.5) = $67.09
Step 4: Total weekly pay
- $1,476 + $67.09 = $1,543.09
Notice the OT premium is based on $33.55 (the blended rate), not $30 (the base rate). That's an extra $7.09 you'd miss if your employer just used 1.5 × $30.
Why This Matters
If your paycheck calculates OT at 1.5x your base rate and ignores differentials in the blended calculation, you may be getting underpaid. DiffPay automatically computes the FLSA blended rate for every pay period so you can verify your paycheck.
Exceptions
- Flat per-shift differentials (like a $50 charge nurse bonus) are included in the regular rate
- Percentage differentials are included at their dollar value
- Discretionary bonuses (like a surprise holiday bonus) are generally excluded
- Some states (notably California) have additional daily OT rules on top of the FLSA weekly calculation
When Your Hospital Uses the 8/80 Rule
Hospitals can elect a 14-day pay period under FLSA §207(j) instead of the standard 7-day workweek. Under this rule (often called "8/80"), overtime is triggered at >8 hours in a day OR >80 hours in the 14-day period.
The blended rate math doesn't change — differentials still get folded into your regular rate. What changes is *when* OT kicks in. A nurse working three 12s per week gets zero OT under standard weekly rules, but several hours of daily OT per shift under 8/80 (3.5 hours with a standard 30-minute break, 4 hours with no break).
If your hospital uses 8/80, run your 14-day schedule through our 8/80 Overtime Calculator to see your real pay and how it compares to standard weekly OT. For the deeper guide, read The 8/80 Overtime Rule for Hospital Nurses.