Discover When the Fifth Business Day of September 2025 Falls, How to Calculate It Correctly, and What to Do If Payment Delays.
The fifth business day of September is a date awaited by thousands of Brazilian workers. According to the Consolidation of Labor Laws (CLT), salaries must be paid by this date. Therefore, this day is essential for organizing bills, automatic debits, and other monthly expenses. However, not everyone knows exactly how to calculate the fifth business day, especially when the month starts on a holiday or Sunday.
When Does the Fifth Business Day of September Fall in 2025?
In 2025, the fifth business day of September will be on Friday, the 5th. To facilitate planning, check below the first five business days of the month:
- 1st business day: Monday, September 1st
- 2nd business day: Tuesday, September 2nd
- 3rd business day: Wednesday, September 3rd
- 4th business day: Thursday, September 4th
- 5th business day: Friday, September 5th
It’s worth remembering that the count of business days includes Saturdays, provided they are not holidays, but excludes Sundays and national holidays.
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Fifth Business Day in the Coming Months
In addition to September, it is important to pay attention to the dates in the coming months to avoid surprises:
- October: Monday, October 6th
- November: Thursday, November 6th
- December: Friday, December 5th
How to Calculate Without Making Mistakes?
The calculation of the fifth business day is simple but requires attention. Start from the first day of the month and count only the business days, that is, exclude Sundays and holidays.
Remember that Saturday should be counted, except when it is a holiday.
For example, in June 2025, the first business day fell on Monday, the 2nd, because the 1st was a Sunday.
If the 2nd had been a holiday, the count would have started on the 3rd. This care avoids mistakes in financial planning and ensures that payments occur within the legal deadline.
What to Do If Payment Delays?
If the salary is not paid by the fifth business day, workers have rights guaranteed by the CLT. The first step is to contact the Human Resources department of the company to understand the reason for the delay.

If there is no solution, Article 459 of the CLT ensures that the worker can seek legal assistance. Failure to pay within the deadline is considered an infraction and can have legal consequences for the company.
It is important to emphasize that, even if the fifth business day falls on a Saturday, many companies and banks anticipate payment to the previous Friday, as not all institutions operate on that day. This adjustment prevents delays and ensures that workers receive their salaries correctly.

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