A recent survey found that office workers are suffering from an increasingly common 21st-century problem: too many emails. The study, which contained observing the 1 of over 50 companies, appears to show that the huge number of messages they are now receiving is 2 many of them from doing their jobs properly. In some cases, 3 to the authors of the report, the negative effect on concentration can be as bad as losing a whole night's sleep.