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Workers' wages peak in their late 30s, official data shows, unlike the mid-1970s when people were paid the most when they were aged in their late 20s.

In 2013, those aged 38 had the highest average earnings, at £13.93 an hour, the Office for National Statistics (ONS) said.

But it 1975, it was 29-year-olds who were paid the most at the equivalent of £7.09 an hour today.

However, the average masks different wage peaks for men and women.

Last year, wages peaked for men at the age of 50, but at 34 for women, . This is likely to show the effect of women taking reduced hours as they start a family.

Yet, the gender pay gap has improved since the 1970s when there was a distinct difference between the pay of men and women, which then got wider with age.

All the figures take into account the rising cost of living over the last 40 years.

The reports studies UK wages over the last four decades, offering some context for people's earnings now.

Among the findings are:

The figures also revealed that young workers have suffered most from the pay squeeze since the financial crisis.

Adjusting wages for the impact of inflation, workers in their 20s were earning 12% less in 2013 than in 2009. Worst hit were those aged 28, who were getting nearly 18% less per hour. The drop for those in their 30s was 9%, while workers in their 50s were being paid 5% less over the same period.

You might think it is a bit of as no brainer to say that the households with the highest income tend to have the highest levels of wealth, but 3% of wealthy households are very low earners.

These are likely to be the elderly in large houses which are worth a lot but with small pensions. These are the very people who protest most against the idea of a Mansion Tax.

Also baby boomers may not not have done as well as we thought. People who started working in the 1990s were 40% better paid than those who started work in the 70s.

So if you started working in 1975 you would have to work between three and four years longer than those who started in 1985 to accumulate the same amount of earnings and between five and six years longer than those who started in 1995.

Youngsters may have been hit hardest by the pay squeeze recently, but the data suggests that they have been doing better in their early years than the baby boomers.

The figures show that during the first 18 years of their working life, those who started work in 1975 would have had to work longer than those who started in 1995 to match their wages, taking inflation into account.

However, Jamie Jenkins, of the ONS, told Â鶹ԼÅÄ News that other factors can squeeze the finances of the younger generation.

"It was a lot easier to buy a house in the 1970s, than now," he said.

Men tend to be at their peak earning power aged through their 40s and early 50s, whereas for women average earnings drop sharply from their mid-30s - with the arrival of children the most likely cause.

The report finds that the national minimum wage has caused clear wage growth for the lowest paid full-time and part-time employees.

Between 1975 and the introduction of the minimum wage in 1998, real earnings growth for the bottom 1% of full-timers was 63%, while the top 1% of earners saw growth of 138%, more than twice as much.

However between 1998 and 2013, the bottom 1% of earners saw growth of 49%, 2.3 times more than for the best-paid 1%.

Frances O'Grady, general secretary of the TUC, said: "We need to go further. A short-term fall in inequality from the financial crisis hitting top earners is not the lasting change we need.

"Now the economy is growing again, the priority must be a pay rise for Britain's workers. It is time to build on the minimum wage and bring in living wages to end the injustice of in-work poverty."