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Category Salary & HR

Base Hourly Rate ($)

Shifts Per Week

Scheduled Shift Duration (Hours)

Unpaid Break Per Shift (Minutes)

Overtime Rule (Jurisdiction)

Shift Differential Type

Differential Value

Estimated Gross Pay

Weekly Pay $0.00

Pay Per Shift $0.00

Annualized (52 wks) $0.00

Weekly Hours & Rate Breakdown

Regular Hours ($0.00/hr) 0.00 hrs

Overtime Hours ($0.00/hr) 0.00 hrs

Double Time Hours ($0.00/hr) 0.00 hrs

Effective Hourly Wage $0.00

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About

Calculating compensation for extended shifts involves complex payroll regulations, particularly when factoring in the Fair Labor Standards Act (FLSA) and state-specific daily overtime laws. This tool models precise wage outcomes by integrating shift differentials, unpaid meal break deductions, and anti-pyramiding overtime logic.

A common pitfall in payroll calculation is the exclusion of shift differentials from the overtime base rate. Under federal law, non-discretionary premiums - such as night shift differentials - must be added to the base wage before applying the 1.5× or 2.0× multipliers. Furthermore, workers in jurisdictions like California are subject to dual-threshold overtime, earning premium pay for hours exceeding 8 per day, while still capped by the 40-hour weekly threshold. This calculator automatically resolves these concurrent constraints to output gross payable wages.

Formulas

To comply with standard labor laws, shift differentials must be annualized or applied to the regular rate of pay before determining the overtime multiplier. The logic operates in two phases: determining the adjusted hourly rate, and applying anti-pyramiding rules to daily vs. weekly hours.

R_adj = R_base + R_diff

Where R_adj is the Adjusted Regular Rate, R_base is the base contractual hourly wage, and R_diff is the shift differential premium (either a flat hourly addition or a percentage of the base rate).

P_gross = {

H_reg × R_adjH_ot × (R_adj × 1.5)H_dt × (R_adj × 2.0)

Reference Data

Jurisdiction / Standard	Daily Overtime (>1.5×)	Daily Double Time (>2.0×)	Weekly Overtime (>1.5×)
Federal (FLSA Standard)	None	None	> 40 hours
California	> 8 hours	> 12 hours	> 40 hours
Colorado	> 12 hours	None	> 40 hours
Alaska	> 8 hours	None	> 40 hours
Nevada (Wage Dependent)	> 8 hours	None	> 40 hours
Oregon (Mfg. Only)	> 10 hours	None	> 40 hours
Common Shift Types	Days per Week	Scheduled Hours	Avg Weekly Hours
Panama Schedule	3 or 4 (Rotating)	12 hours	42 hours
Pitman Schedule	3 or 4 (Rotating)	12 hours	42 hours
Standard 3/12 (Nursing)	3	12 hours	36 hours

Frequently Asked Questions

Unpaid breaks are completely deducted from your total "hours worked" pool. If you are scheduled for a 12-hour shift but take a 30-minute unpaid meal break, your payable hours are 11.5. This directly reduces the likelihood of crossing daily or weekly overtime thresholds.

Under the Fair Labor Standards Act (FLSA), a shift differential must be included in your "regular rate of pay" before calculating overtime. If your base wage is $20/hr and you receive a $2/hr night shift differential, your overtime rate is calculated at $22 × 1.5 = $33/hr, not $30/hr.

Pyramiding occurs when an employee is paid both daily overtime and weekly overtime for the exact same hours. Labor laws generally forbid this. If you earn 4 hours of daily overtime during a 12-hour shift, those 4 hours do not count toward your 40-hour weekly threshold for generating additional overtime.

Hospitals and residential care facilities can opt into an 8/80 FLSA exemption. Under this, overtime is paid for any hours worked over 8 in a single day OR over 80 in a 14-day period. Because 12-hour shifts inherently trigger the 8-hour daily overtime rule, the 8/80 system is rarely cost-effective for 12-hour shift schedules, and facilities usually default to standard 40-hour weekly rules.