What work traditions need to go away?

One theme of my upcoming book is questioning aging work practices. Particularly ones followed our of tradition without evidence they contribute to quality of work.

Here’s a list of work practices that should be reconsidered: is there any evidence these contribute to work performance in any way?

Dress codes (ties, skirts)
Measurement by time, not performance
Casual Fridays
Hour long meetings by default
Mission statements
9 to 5 work day
unpaid overtime
The cc: line on email (this was suggested 4 times)
Corner offices
Conference calls
Unequal pay
Anti-morale morale events

This list was generated from replies to two twitter posts .

While I’m happy to hear gripes about practices done poorly, ideally I’m looking for practices that have no value no matter how well they’re done.

What work traditions do you think need to go away?