A recent study by LastPass measured that the average employee shares 6 passwords with their coworkers. Workers are also still regularly re-using passwords across work and private domains, as well as across various accounts. In one improving area, however, the uptake in multi factor authentication implementation has increased from 25.5% to 45%. The full study results are available at the link below.  

Source: Employees Share Average of 6 Passwords With Co-Workers