The 40-hour week covers barely half the world

Ask what a full-time week is and most people in Europe or North America will say forty hours without hesitating. Across the 105 countries we track, that answer is right just over half the time.

The gap between the two ends is not marginal. A 48-hour week is thirty-seven percent more time than a 35-hour week. Over a full year that is roughly 675 additional hours, about seventeen extra forty-hour weeks of work for the same job title.

Two conventions, sixteen years apart

The distribution is not random, and it is not really about economic development. It tracks which international standard a country's labour law was written against.

The International Labour Organization's very first convention, adopted in 1919, set eight hours a day and forty-eight hours a week. That was the radical reform of its era, replacing weeks that ran considerably longer. A second convention in 1935 recommended forty hours, but it was ratified by far fewer states.

So the 48-hour countries are not lagging so much as sitting on the older standard, which was never superseded in their statute books. And the forty-hour bloc largely reflects mid-twentieth-century labour settlements in Europe, North America and the industrialised parts of Asia.

France, and what the 35-hour week actually means

France is alone at 35 hours, and the figure is routinely misread abroad. It is not a legal maximum and it is not a ban on working longer. It is the threshold above which hours count as overtime and attract premium pay, which makes it a cost mechanism rather than a prohibition. French employees work beyond it regularly; the employer pays more when they do.

This is the general point about every number in the table: the standard week is the point at which the price of an hour changes, not a cap. The actual legal maximum is usually a separate and higher figure, which is why our country pages list the standard week and the statutory maximum as two different fields.

Why this belongs next to a salary comparison

A monthly salary tells you nothing about the rate you are being paid unless you know the hours attached to it. Two identical offers of 3,000 a month are not the same job if one is 35 hours and the other is 48.

This is the single most common error in cross-border salary comparison, and it also distorts minimum wage tables, where some countries legislate an hourly floor and others a monthly one. That problem gets its own treatment in why minimum wage comparisons mislead.

What the standard week does not capture

• Paid leave. Statutory annual leave ranges from a couple of weeks to five or more. A shorter week with less leave can amount to more annual hours than a longer week with generous leave.
• Public holidays. These vary from under ten to well over fifteen days a year and are counted per country on our public holidays comparison.
• Actual versus contractual hours. Standard hours are a legal construct. Average hours actually worked, which national statistics offices measure separately, are frequently lower in part-time-heavy economies such as the Netherlands and higher in overtime-heavy ones.

If you are converting between a monthly salary and an hourly rate, or pricing a contract by the day, the number of working days in the year matters as much as the length of the week. That calculation, including the holiday-counting traps, is in how to count working days properly.