Youngsters who get themselves Saturday jobs like Brooklyn Beckham or Jamie Oliver 's kids may end up harming their grades , a report has found . While it may do celebrity children – like David and Victoria Beckham ’ s son , who grabbed a few weekend shifts at a coffee shop – the world of good to get some work experience , research suggests it could come at a cost to young people ’ s education . Celebrity chef Jamie recently revealed he intends to keep his daughters ‘ real ’ by having them work in his pub on the weekends . Youngsters who get themselves Saturday jobs may end up harming their grades , a report has found . Jamie Oliver ( pictured with his wife and children ) says he will encourage his kids to work in his pub on weekends . But a new study by the Institute for Social and Economic at the University of Essex found teenagers who take on part-time jobs experience a slip in their GCSE results . This is because earning extra cash makes it more likely for youngsters to spend it unwisely – including on alcohol , cigarettes and and cannabis . And the effect was found to be more drastic for girls . Despite having millionaires for parents , Brooklyn Beckham took on weekend shifts at a coffee shop . Results showed an extra hour of work per week in Year 10 saw their results drop around one grade in one subject the following year . The study analysed the hours these young people spent working and the impact of this on time spent on study time , other activities and their grades at GCSE level . Dr Angus Holford , who wrote the report called Youth Employment and Academic Performance , says approximately a quarter of 13 to 16-year-olds take on some form of formal paid employment during term time . ‘ This can be a good thing – they earn their own money and can pick up useful skills , which might help them find full-time work in the future , ’ he said , according to The Observer . ‘ However , they may spend that hard-earned money on less than useful things , or fall in with a different group of people . ‘ We did find that schoolchildren who worked became more likely to drink alcohol regularly , smoke or consume cannabis. ’ He added the long-term effect of employment would be particularly damaging for ‘ borderline students ’ – those who are at risk of not achieving the targets needed ( five A*-C grades , including English and mathematics ) to progression into further education . Dr Holford added that as academic results at 16 have such a great influence over future careers , the results of his study should come as a warning to parents who want children to achieve their full potential .
David and Victoria Beckham ’ s son took on a few shifts at a coffee shop . Jamie Oliver says he plans to encourage daughters to work in his pub . A quarter of 13 to 16-year-olds take on paid employment during term time . Comment: