Katarzyna Zielińska
HR & payroll expert
Katarzyna Zielińska is an HR and payroll specialist. Writes about employment contracts, ZUS, Labour Code 2026, leaves, remote work and employer duties.
Articles by author (18 articles)
Do you pay ZUS on B2B? Contributions and reliefs 2026
Do you pay ZUS on B2B? Who must pay, contribution amounts in 2026, relief options (Start relief,...
How to Calculate Net Salary from Gross — 2026 Guide
Complete guide: how to calculate net salary from gross in 2026. Social security contributions,...
Payroll and HR in 2026 — Complete Employer's Guide
Complete guide to payroll and HR in 2026. Employment contract types, minimum wage, employer...
Employee Payroll Costs 2026 — How Much Does an
Complete guide to employee payroll costs. Calculate real employee cost for employer: salary,...
Small ZUS Plusconditions, limits, and how to benefit
Small ZUS Plus 2026: eligibility conditions, 120,000 PLN income limit, contribution amounts, DRA...
Minimum Wage 2026 — Gross, Net and Employer Costs
Minimum wage 2026: 4,806 PLN gross, 3,575.85 PLN net. Employer costs ~5,790 PLN, hourly rate...
Employment ContractTermination Notice Period
Employment contract termination notice periods — legal table, timelines for employees and...
Remote Work — Regulations and Employer Obligations
Remote work regulations and employer obligations in 2026. Costs, flat rate, control, occasional...
ZUS Contributions 2026 — Complete Table of Monthly
ZUS contributions 2026: full table of monthly amounts for entrepreneurs. Comparison of standard...
Employment Certificate — What It Contains and How to Complete? 2026…
Employment certificate — what it contains, how to fill it out, and what information must be...
Whistleblower in Company — New Obligations from 2026
Whistleblower protection in companies — new employer obligations from 2026. Whistleblower Act,...
Startup Relief — 6 Months Without ZUS at Business
Startup relief is exemption from ZUS contributions for 6 months for new entrepreneurs....
Employment Contract vs B2B in 2026? Cost and Benefits
Employment contract (UoP) vs B2B in 2026. Cost comparison for employers, taxes, social...
Engagement Agreement vs Work-for-Hire Contract — Key
Detailed comparison of engagement agreements vs work-for-hire contracts in 2026. Analyze ZUS...
Annual Leave 2026 — Days, Calculation, Pay
Complete guide to vacation leave in 2026: 20 vs 26 days, seniority credit, proportional leave,...
VAT on Company Cars 2026 — Rules, Deductions, and Tax
VAT on company cars 2026: rules for VAT deduction, split use, company car benefits, fuel costs,...
Changes in Polish Labor Law 2025-2026 — Employment
Labor law changes 2025-2026 Poland: minimum wage, working time, remote work, leave policies,...
ZUS for Student Entrepreneurs 2026
ZUS for students running business 2026: exemptions, Student Entrepreneur status, contribution...