About Us — Irtisanomisaika.com

Our Mission

Irtisanomisaika.com was founded to solve a pervasive challenge in the Finnish job and rental market: statutory notice rules, calculation periods, and holiday compensations are often scattered across Finnish-language legal acts (Finlex), collective agreements (TES), and labor agency guidelines.

Our mission is to provide Finland's fastest, easiest-to-use, and entirely free calculator portal. We translate complex legal statutes into exact calendar end dates, final salary estimates, and official termination documents — requiring no account creation, no app downloads, and zero clutter.

Why We Built It: Untangling Finnish Labor & Tenancy Law

Finnish law contains several technical nuances that frequently confuse employees, expatriates, and managers:

• The "Day 0" Counting Rule (Statutory Calculation of Time Limits Act 150/1930, Section 2): Notice periods never begin on the day notice is delivered; they start on the following calendar day.
• Calendar Months vs. Calendar Days (TSL 6:3 §): A 1-month notice period ends on the exact corresponding calendar day of the subsequent month, regardless of whether that month has 28, 30, or 31 days.
• Tenancy Notice Special Rule (AHVL 52 §): Unlike employment contracts, notice for residential leases is calculated starting from the last day of the calendar month in which the notice was given.
• Holiday Pay Divisors (25 vs. 21 Rule): Under the Annual Holidays Act (162/2005), accrued leave compensation for monthly salaried employees is calculated using standard statutory divisors (25 or 21) rather than actual workdays.
• Probation Periods (TSL 1:4 §) and the 45-Day TE-Office Waiting Period (Karenssi): Resigning voluntarily or terminating during trial periods carries direct consequences for Kela and unemployment funds, making timely planning critical.

By encoding these exact formulas into client-side mathematical algorithms, Irtisanomisaika.com ensures you can calculate your exact timelines instantly with high accuracy.

100% Client-Side Privacy by Design

Salary figures, termination dates, and employer names are deeply sensitive personal details. We have designed Irtisanomisaika.com with a strict architectural guarantee: zero user data is ever transmitted to or stored on any server:

• Volatile Browser Memory: Every calculation runs solely in your local browser runtime via modern JavaScript.
• No Backend Database: There is no remote user database, no tracking login, and no profile storage.
• Local Storage Only: Only basic client-side preferences (such as your dark/light theme choice) are preserved locally in your browser's localStorage, which you can clear at any time.

You can calculate your notice period, estimate final salary, and generate an official resignation letter with complete confidentiality.

Official Legal Sources & EEAT Standards

Our calculators and editorial resources are grounded strictly in Finnish official legal acts and labor administration guidance:

• Employment Contracts Act (TSL 55/2001): Chapter 6 Section 3 (statutory notice periods), Chapter 1 Section 4 (probation), Chapter 2 Section 11 (final pay due dates).
• Annual Holidays Act (162/2005): Holiday compensation formulas, accrual rates, and statutory divisors.
• Act on Residential Leases (AHVL 481/1995): Section 52 (rental notice terms and calendar month calculation).
• Statutory Calculation of Time Limits Act (150/1930): Statutory principles for counting legal time periods.
• Occupational Safety and Health Administration in Finland (Työsuojeluhallinto): Official guidance on employment relations and workplace norms.

Our calculation engine is verified against automated unit test scenarios covering leap years, month boundaries, and weekend timelines according to Finnish statutory precedents.