Option A - INCORRECT.
The primary cause of sleep deprivation is not just overwork, but also the time frame of the lengthy overwork done during the day which has deprived most of their resting hours.

Option B - CORRECT.
This option has mostly justify the medical doctor argument. Employees would get more sleep if they had greater latitude in scheduling their work hours. This rescheduling is most important to workers because it helps them get more quality resting hours and also eradicate the possibility of getting impaired social ailment due to lack of quality sleep. However, this is the wish of most workers.

Option C - INCORRECT.
Medically Individuals are meant to sleep at-least 8 hours per day, but this sleeping hours has been bridged do to the increase in working hours of most people which has denied them of quality rest. However, individual vary widely in the amount of sleep they require only if they are under medical attention.

Option D - INCORRECT.
This option is a fact based on the Medical Doctor argument. More people would suffer from sleep deprivation today than did in the past if the average number of hours worked per week had not decreased. Also this will increase the number of people with social illness, meanwhile to eradicate this restructuring of the workday should be put into consideration to allow people flexibility in scheduling their work hours.

Option E - INCORRECT.
The extent of one's sleep deprivation is not proportional to the length of one's workday, because most workers have more working hours compared to sleeping hours.