However, workplaces will have to evolve to meet workers' needs. Healthy canteens, brain training, and even DNA-testing to better understand workers' health are some of the ways they will do this.
"In an aging society in which retirement is no longer the end goal to start re-living life, employers are expected to take better care of their employees," the report said.
Around 32 percent of British workers are exhausted by their attempts to maintain a work life balance, the report claims.
"Workers feel exhausted by juggling career, family, friends, social life, fitness, health and other commitments, and do not think they will want to work later in life," it says.
Higher stress levels and an increased likelihood to quit means that the failure to tackle this could cost U.K. businesses £44 billion ($70.7 billion).
Read MoreAnswerto work-life balance?
Smartphones, laptops and other gadgets allow employees to do their work anytime and anywhere.
According to the report, around 73 percent of British workers feel they're expected to be "always on" and available for work. So-called "overload creep" could cost U.K. companies around £101 billion.
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