This chart shows the state of the gender pay gap across the developed world

Tuesday was International Women's Day, a day on the calendar that has had the sad side effect of reminding us of all the unnecessary crap women everywhere deal with on a daily basis.

On average, women across the world effectively work 100 days for free every year thanks to the pervasive gender pay gap, which men's rights activists will insist on telling you doesn't exist.

In many countries, the situation is even worse for ethnic minority women: in the US, for example, women as a whole earn 74 cents for every dollar a man earns, but the figure for black women is just 60 cents, and Latina women, 56.

In the EU, the situation is generally better, but not one member country has achieved gender parity in the workplace yet.

In the developed world, the gap in full-time hourly earnings is starkest in South Korea and Japan, with a 36.6 per cent and 26.6. per cent gap respectively, as data from the OECD shows:

The Netherlands, Turkey and Canada round out the top five worst developed economy offenders.

While the UK comes in eighth in these selected countries, it's still worse than the EU average of 16.4 per cent.

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