What changes on Monday 28
Commerce Workers’ Day is legally set for September 26 each year under Law 26,541. For 2026, the observance for workers covered by CCT 130/75 was moved to Monday, September 28, according to notices published by the Argentine Chamber of Commerce and Services and the Buenos Aires City Commerce Workers’ Union on September 8, 2026.
In practical terms for the city, this means shops, supermarkets, malls and other retail businesses may operate unevenly on Monday. It is better not to assume that everything will be open, or that everything will be closed: CAC itself stated that establishments are not necessarily required to close.
How to plan errands without wasting time
If you need to buy something essential on Monday, September 28, 2026, the best first step is to check the store’s official channel: website, verified social accounts, customer phone line or its own posted notice if you pass by beforehand. For non-urgent purchases, consider doing them earlier or waiting until Tuesday, especially if you rely on one specific shop.
To avoid unnecessary trips, make a short list: medicines or essential items on one side, replaceable purchases on the other. This guide does not confirm the hours of specific chains, galleries or shops, because that information requires business-by-business verification and may vary by establishment.
What the rule says, and what not to assume
Law 26,541 establishes September 26 as a day of rest for commerce employees and treats it like a national holiday for legal purposes. In 2026, CAC reported that the parties to CCT 130/75 agreed to move the observance to Monday, September 28.
CAC also stated that if an establishment opens, it may be staffed by its owners or by employees who agree to work that day, and it published criteria on how the workday is treated. That information is attributed to the chamber and does not replace legal, union or professional advice for individual cases.
A simple rule for moving around Buenos Aires
For Monday 28, think of the city as having partial retail services. If you need something from a very specific type of shop, check before travelling; if you can solve it with alternatives near home or work, leave room to change plans.
It is also worth separating retail activity from other errands. This article does not verify changes to banks, public offices, transport, on-duty pharmacies or essential services. If your plan depends on any of those services, consult the relevant official source before leaving.
Keep exploring
Law 26,541 - Day of rest for commerce employees ↗CAC - The 2026 Commerce Workers’ Day transfer was made official ↗SEC Capital - Commerce Workers’ Day holiday ↗FAECYS - Commerce Workers’ Day circular: transfer ↗Stories worth sharing.
