They usually exist in unspoken and unwritten format because they form a part of the logical argument or course of action implied by tacit assumptions.
Or, as Vince Waldron wrote, "A pet, once named, instantly becomes an inseparable member of the family".
Unwritten rules can cause uncertainty and stress for newer employees, and great clarity can improve productivity and profitability.
[3] In the workplace, some unspoken rules can have a significant impact on one's job satisfaction, advancement opportunities, and career trajectory.
[3] In sports, Scottish football club, Rangers until 1989 had an unwritten rule of not signing any player who was openly Catholic.