A sixth of the UK's adults (17 per cent) have more than one job, according to recent thinkmoney.co.uk research.
Among these second jobbers, a third say they wouldn't be able to get by financially without two jobs, while one in two say the reason for the move is to get some extra spends.
Among 18-to-24-year-olds, the proportion with two jobs is bigger – 33 per cent according to the OnePoll survey of 2,000 Brits.
And one in three among these younger second jobbers say a second job is a financial necessity for them.
Hospitality jobs are a popular choice when it comes to additional work.
For example, 15.9 per cent of the people in the research with a second job had chosen bar work for their additional job. That put it at second in a chart of the most commonly picked second job options, just behind freelancing (16.8 per cent).
Admin (13.8 per cent), retail (13.5 per cent), cleaning (12.6 per cent) and delivery work (5.6 per cent) were then listed, with waiting and chef jobs (3.8 per cent) marking a second showing for hospitality work in the chart.
Child minding (2.4 per cent) and 'other' jobs (15.6 per cent) both also appeared in the chart.
"Despite the recent uptick in real wages and the falling cost of food and fuel, there’s no doubt many people still find that there is quite a lot of the month left at the end of the money," said thinkmoney spokesperson, Ian Williams.
"This is especially true for young people – a third of whom have more than one job, either because they couldn’t survive financially without it, or just to make their financial situation a bit easier.
“Whilst extra income is always welcome, working all hours can put a real strain on health, family and relationships," he added, in a warning against over-work.
Sensible use of multiple jobs can be a way to secure an appropriate level of income. For example, perhaps one job you have is part time, or doesn't pay very much, despite being your dream career.
Hospitality jobs can be an ideal extra role, partly because many offer evening and weekend work, at exactly the times when you don't need to do your main job.
They could even let you practice skills that your 'main' role doesn't involve. If you spend all day with the same colleagues, why not see whether your skills stretch to a public-facing role, such as waiting?
Top tips for finding hospitality work for a second job:
Use our help
Why not sign up to get help from Berkeley Scott, so that you have expert assistance in your job hunt?
Rework your CV
Your hospitality CV may need to have a different focus to the CV you used to get your 'first' job, so rework it before making applications.
Pick the right area
Hospitality and catering work covers all sorts of areas, you'll want to pick one you're interested in and which fits your needs.
As Ian Williams' advice suggests, it's just not worth taking on too much work. So ensure that your second job really does fit in comfortably with your first, long term. A level of work that you think you can manage when the second job is just an idea may be different from what you can cope with over several months or years.