When I started work (1970), most worked 37.5 hours a week and no more. We went home and enjoyed life.
Today the work ethic is to work longer and longer hours, but I doubt people are any more productive. Longer working hours, like the paperless office, are a myth.
If you are in a job, I know you have to do things to "look busy" and "please the boss", but stand back for a minute - look at yourself and ask yourself, "am I really adding any value?". If not, change the way you work or get a different job.