Accoding to the latest study, time spent working has the biggest impact on sleep. The more hours you work, the less sleep you get. What takes most of your time ? - work and commuting time, takes more time off your sleep time, compared to eating and leisure time.
Modern technology which is supposed to increase productivity and give us more free time has infact made our life pace move faster. Read this BBC report.
Sleeping, eating and recreation are necessary activities to sustain life. Working is also a necessary activity to sustain life - earning money to pay the bills for goods and services received to sustain life. However, how much (and at what quality) are these goods and services necessary to sustain your life ? What is the level of comfort necessary for your survival ? Are you willing to pay the price ?