Greg Miaskiewicz

Greg Miaskiewicz

CEO & Co-Founder

Greg is the CEO and co-founder of Flux. He spent over a decade building payroll and HR platforms at scale, including as a senior product director at Deel, and writes about where technology, tax, and labor law meet in global payroll.

Articles by Greg Miaskiewicz

Compliance
Time Tracking in Mexico: The Duty That Already Exists, and the 40-Hour Reform That Raises the Stakes

There is a common misconception about time tracking in Mexico: because no law forces an employer to install a particular time clock, many companies assume that recording hours is optional or informal. It is not. The…

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HR & Labor Law
What Workers in Spain Are Entitled To: A Guide to Leave

Spain has one of the more generous leave systems in Europe, and it is built on a design choice worth understanding before the individual entitlements: a good deal of paid leave in Spain is funded by Social Security…

What Workers in Spain Are Entitled To: A Guide to Leave
HR & Labor Law
What Workers in Portugal Are Entitled To: A Guide to Leave

Portuguese leave has a similar logic to Spain's: the large family entitlements are funded by Social Security rather than by the employer, while a set of shorter leaves are the employer's own cost. But Portugal has its…

What Workers in Portugal Are Entitled To: A Guide to Leave
Payroll Calculations
The Real Cost of a Portuguese Hire: Employer Contributions and the True Cost of Employment

The salary you agree with a worker in Portugal is not the full cost of employing them. On top of gross pay sit an employer social-security contribution, a mandatory work-accident insurance premium, and a payment…

The Real Cost of a Portuguese Hire: Employer Contributions and the True Cost of Employment
HR & Labor Law
Portugal Rebuilt Its Talent Tax Breaks: NHR, IFICI, and IRS Jovem

Portugal has spent more than a decade using the income-tax code as a talent-attraction tool, and in the last two years it tore up a big part of that toolkit and rebuilt it. If you run payroll for anyone employed in…

Portugal Rebuilt Its Talent Tax Breaks: NHR, IFICI, and IRS Jovem

Guides by Greg Miaskiewicz

HOW-TO GUIDES
Mexico's 40-Hour Reform: What Actually Changes for Payroll in 2026 and Beyond

Mexico just cut the maximum work week from 48 hours to 40, and it did so at the constitutional level, which means this is not a policy a future administration walks back with a memo. If you run...

Blog image: labor
HOW-TO GUIDES
A Payroll Guide to INFONAVIT, Mexico's Housing Fund

INFONAVIT is Mexico's national housing fund for workers, and funding it is a mandatory payroll obligation for every formal-sector employer in the country. If you run payroll for clients with workers...

Blog image: construction