Sabrina Perez
Software Engineer · Builder and maintainer of HRCalcs
Software engineer with a computer engineering background. Sabrina builds and maintains every HRCalcs calculator and tests each one against the worked examples published by the US Department of Labor and in the Code of Federal Regulations.
What she does on HRCalcs
- Implements each calculator directly from the text of the statute, the regulation, or the DOL fact sheet it cites.
- Writes automated tests that reproduce the official worked examples before a calculator is published, and re-runs them on every change.
- Writes and updates the guides, dating every figure so outdated numbers are easy to spot.
- Corrects errors readers report — see how we build and test.
What she is not
Sabrina is not an attorney and HRCalcs does not give legal, tax or payroll advice. The calculators apply the published rules; applying them to a specific employee or contract is a judgment for qualified counsel.
Articles by Sabrina Perez
- The Regular Rate of Pay: The Number Behind Every Overtime Calculation
- Day Rate Overtime After Helix v. Hewitt: Why a High Day Rate Isn't Exempt
- How to Recover Unpaid Overtime: A Practical Guide for Employees
- FLSA Salary Threshold 2026: It's $684/Week
- California Overtime Rules vs. Federal FLSA: What Employers Need to Know
- 8 Common FLSA Violations — and How to Avoid Them
- Minimum Wage by State 2026: Complete Table for US Employers
- How Non-Discretionary Bonuses Affect Overtime Pay
- Exempt vs. Non-Exempt: The Complete FLSA Classification Guide (2026)
- Fluctuating Workweek Method Explained: When and How to Use the 0.5x Rule
- How to Calculate Overtime Pay: A Step-by-Step Guide (2026)
Contact: info@hrcalcs.com or the contact form.