Even for employees in traditional 9-to-5 industry jobs, the9-to-5 workday is fading.

A CareerBuilder survey of 1,000 workers in financialservices, IT, sales and business services jobs found that nearlytwo-thirds of them say the 9-to-5 workday is fast becoming — or hasalready become — extinct.

These folks said their work hours are erratic and, at least fora quarter of them, include checking their email and other workmessaging channels while spending time with family and friends.

No one's forcing them to do so, said 62% of respondents. They'redoing so as a personal choice.

“Workers want more flexibility in their schedules, and withimprovements in technology that enable employees to check in at anytime, from anywhere, it makes sense to allow employees to workoutside the traditional 9-to-5 schedule,” Rosemary Haefner, chiefhuman resources officer for CareerBuilder, said in a release withthe survey results. “Moving away from a 9-to-5 work week maynot be possible for some companies (yet), but if done right,allowing employees more freedom and flexibility with theirschedules can improve morale, boost productivity andincrease retention rates.”

Other findings of the survey included:

• Twenty percent said work is on their minds when they go tobed;

• Forty-two percent said they wake up with work on the brain;

• Twenty percent said thinking about work interrupts their downtime.

More men than women work outside the 9-to-5 time slot (44% vs.32%), check email outside those hours (59% vs. 42%) and check onwork communications during friend and family activities (30% vs.18%). However, more women (23%) than men (16%) say work is the lastthing they think about before going (or trying to go) to sleep.

The breakdown by age offered some insights, some perhapsunexpected. For instance, far fewer younger workers work outside of9-to-5 hours than older workers do, while thechecking of work emails outside the office didn't vary nearly asmuch by age. Seven in 10 workers aged 55 or older said they chooseto connect to work outside the 9-to-5 hours, compared to 56% of18-to 24-year-olds. Younger workers were far more likely than theirolder peers to go to bed and get up with work as the last and firstthing on their minds.