According to The Sun, 15-year-old Brooklyn has already completed several shifts at the cafe, serving tea and coffee to tourists in the capital.
A source told the newspaper that Brooklyn has been encouraged to get a part-time job by his parents, David and Victoria Beckham, who are keen for their children to learn the value of money.
"Brooklyn has got the world at his fingertips and could have a life of luxury if he wanted," said the source. "But the lad is not that way inclined."
Brooklyn Beckham works up a sweat with dad David
"Brooklyn and his three siblings (Romeo, 11, Cruz, nine, and Harper, two) have all had a great start in life - much better than most," the source added. "But David and Victoria want them to know what hard work is like."
Brooklyn and Victoria Beckham
It seems that despite the famous family's immense wealth, Brooklyn is keen to make his own way in life.
"Brooklyn wants to make his own money and be his own man," reported The Sun. "His mum and dad are delighted and it's a testament to their parenting skills. Instilling a solid work ethic early will be good for him."
It had previously seemed that the Beckhams' eldest child had been headed for a career in modelling, like his brother Romeo, when he landed his first cover shoot in March.
The 15-year-old appeared on the cover of Man About Town magazine, with his hair in a quiff and sporting a satin bomber jacket emblazoned with the word 'quiche'.
Left to right: Brooklyn, Romeo, David, Cruz
At the time there was speculation that Brooklyn was looking to take on more modelling jobs although a source close to the family suggested he still has other interests.
Brooklyn Beckham: Fifteen pictures for his 15th birthday
"Brooklyn is focused on his school and soccer," reported the MailOnline. "But of course he was so excited to get his first magazine cover shoot as he's interested in photography like his dad.
"David and Victoria are immensely proud of all their children, and they never push them into anything even though the boys get lots of offers."