Higher earners sleep better and also share the same bed as their partner more often, according to new research.
The study, conducted by the Sleep Council, an organisation that gives advice on healthy sleep habits, looked at the sleeping patterns of more than 5,000 adults.
In general, it found, the more you and your partner earn the more likely you were to sleep well or very well on a regular basis.
High earners have better quality sleep
On average 73 per cent of people said they slept well or fairly well on a regular basis.
Among adults that earn more than £75,000 a year, this increased to 83 per cent.
On the other hand, 33 per cent of those who were unemployed had a poor or very poor sleep most nights, the survey found.
The research also suggested the more you earn the more likely you are to sleep in the same bed as your partner.
Money ‘taking its toll on relationships’
More than eight out of 10 - 82 per cent - high-earning couples said they always slept together, the research showed.
Sleep Council spokeswoman Jessica Alexander said: "The most startling statistics were how household income, or lack of it, is clearly taking its toll on relationships.
"Among those earning less than £25,000, 12 per cent said they never sleep with their spouse or partner. Among those not working at all the figure is 13 per cent.
"At around £35,000 there would appear to be a clear dividing line in terms of the number of couples who share the same bed.
"And once you get to the over the £55,000 income bracket, the percentage of couples sleeping together rises further to 86 per cent."
Lawyers the best sleepers and IT workers go to bed the latest
The Sleep Council also looked at the sleeping habits of people in different jobs.
People working in legal professions are the most likely to get a staple seven to eight hours' sleep each night – 32 per cent said they regularly get that amount.
This is way above the 22 per cent national average.
Those in architecture, engineering and building get the least sleep with 72 per cent saying they get less than seven hours each night.
Legal eagles are also the most likely to be tucked up between the sheets by 10pm - 17 per cent compared to the national average of 10 per cent.
Those who work in IT and telecoms were found to go to bed the latest - 35 per cent of IT and telecoms boffins leave it until between 11pm and midnight.