Income, Wages, and Salaries – Comprehensive Study Notes

Learning Targets

• Accurately compute:

  • Weekly or monthly wage from a given annual salary.

  • Wages from an hourly rate, including cases with overtime (OT), night-differential, rest-day, and holiday premiums.

  • Earnings that depend on commission or piecework.

• Solve complete salary‐related problems (benefits, deductions, tax, gross vs. net) with or without technological tools.

1. Fundamental Vocabulary & Symbols

• Income – umbrella term for any payment received for work (synonyms: pay, earnings, remuneration).

• Wage – earnings based on piece-, hourly-, or daily-rate.

  • Daily Wage – legal pay for one day’s work; varies by region.

  • Hourly Wage – legal pay for one hour’s work.

  • Formula: $\text{Hourly Wage}=\dfrac{\text{Daily Wage}}{8}$

  • Pay Premium – extra rate applied for work done on special hours/days (holidays, rest days, nights).

• Salary – earnings paid on a monthly or annual basis.

• Overtime (OT) – hours beyond 8 per day or 40 per week.

  • Overtime Premium – extra compensation for OT hours.

• Commission – percentage of sales paid to salespersons.

  • Straight Commission (100 % commission)

  • Salary-Plus-Commission (base salary + commission)

• Piecework Earnings – pay based on number of items completed.

2. Philippine Statutory Wage Figures (selected)

• Department of Labor and Employment (DOLE) – National Wages and Productivity Commission issues wage orders.

  • NCR (National Capital Region)

  • Wage Order No. NCR-25 (private sector)

  • Effective 17 July 2024

  • Minimum Daily Wage: $P608.00\text{ – }P645.00$

  • Domestic Worker Order (NCR-DW-05) — min monthly: $P7,000.00$ (effective 4 Jan 2025)

  • Region IV-A (CALABARZON)

  • Wage Order IVA-21 (private sector)

  • Effective 30 Sept 2024; full rates 1 Apr 2025

  • Minimum Daily Wage: $P420.00\text{ – }P560.00$

  • Domestic Worker Order RB-IVA-DW-05 — monthly min: $P6,750.00$ (7 Mar 2025)

• Regional variability emphasizes need to reference latest DOLE orders for compliance.

3. Wage Computations

3.1 Hourly Wage Examples

• NCR Daily Wage: $P645.00$ ⇒ $\text{Hourly}=\dfrac{645}{8}=P80.625$

• Region IV-A Daily Wage: $P560.00$ ⇒ $\text{Hourly}=\dfrac{560}{8}=P70.00$

3.2 Pay Premium Factors

3.3 Pay Premium Sample (Hourly rate = $P52.00$)

• Rest Day: $(52)(1.30)=P67.60$

• Special Holiday: $(52)(1.30)=P67.60$

• Rest Day + Special Holiday: $(52)(1.50)=P78.00$

• Regular Holiday: $(52)(2.00)=P104.00$

• Regular Holiday + Rest Day: $(52)(2.60)=P135.20$

• Double Holiday: $(52)(3.00)=P156.00$

• Night Differential: $(52)(1.10)=P57.20$

3.4 Overtime Factors

Sample (Hourly $P52.00$):

• Ordinary Day OT: $(52)(1.25)=P65.00$

• Rest Day OT: $(52)(1.69)=P87.88$

• Regular Holiday OT: $(52)(2.60)=P135.20$, etc.

4. Salary Concepts & Conversions

• Common high annual salaries cited: Civil Engineer $P350{,}000$; Teacher I $P360{,}000$.

• Time equivalences: 1 year = 2 semi-annual = 6 bi-monthly = 12 months = 52 weeks.

• Formulas:

  • $\text{Semi-Annual Salary}=\dfrac{\text{Annual}}{2}$

  • $\text{Bi-Monthly Salary}=\dfrac{\text{Annual}}{6}$

  • $\text{Monthly Salary}=\dfrac{\text{Annual}}{12}$

  • $\text{Weekly Salary}=\dfrac{\text{Annual}}{52}$

4.1 Examples

1. Aircraft Pilot — Annual $P1{,}624{,}356.00$

   • Semi-Annual: $\dfrac{1{,}624{,}356}{2}=P812{,}178.00$

   • Bi-Monthly: $\dfrac{1{,}624{,}356}{6}=P270{,}726.00$

   • Monthly: $\dfrac{1{,}624{,}356}{12}=P135{,}363.00$

   • Weekly: $\dfrac{1{,}624{,}356}{52}=P31{,}237.62$

2. Medical Doctor — Annual $P615{,}012.00$

   • Semi-Annual: $P307{,}506.00$

   • Bi-Monthly: $P102{,}502.00$

   • Monthly: $P51{,}251.00$

   • Weekly: $P11{,}827.15$

5. Commission‐Based Income

• Straight Commission: $\text{Commission}=\text{Amount Sold}\times \text{Rate}$

• Salary-Plus-Commission: $\text{Gross Pay}=\text{Salary}+\text{Commission}+\text{Other Income}$

Example:

• Weekly Salary $P5{,}350.00$, Sales $P15{,}000.00$, Commission Rate $8\%$.

  • Commission: $(15{,}000)(0.08)=P1{,}200.00$

  • Total Gross Pay: $5{,}350+1{,}200=P6{,}550.00$

6. Piecework Earnings

• Formula: $\text{Total Earnings}=\text{Piece Rate}\times\text{Quantity}$

Example:

• Rate $P1.20$ per piece, Quantity $360$.

  • Earnings: $(1.20)(360)=P432.00$

7. Practical & Ethical Notes

• Wage laws exist to protect workers; employers must comply with current DOLE wage orders.

• Night differential and holiday premiums compensate for social costs (family time, health risks).

• Transparent computation builds trust and avoids labor disputes.

• For budgeting, employees should know gross vs. net income (tax & deduction topics follow in later lessons).

8. Quick Reference Formula Sheet

• Hourly from Daily: $\dfrac{D}{8}$

• Premium Pay: (\text{Hourly})(\text{Applicable %})

• OT Pay: (\text{Hourly})(\text{Premium %})(1.30) (general pattern)

• Salary Conversions: divide annual by 2,6,12, or 52.

• Commission: $S\times R$ ; Gross = Base + Commission.

• Piecework: $R\times Q$

End of Study Notes.