Simple Sabotage Field Manual (Office of Strategic Services, 1944)

The OSS wrote this in 1944 for people in occupied Europe who wanted to help and had no weapons, no training and every reason not to be caught. Much of it concerns fires, machinery and railways. The section that has outlived the war is the one on organisations, which advises the ordinary employee to be conscientiously unhelpful:

Insist on doing everything through "channels." Never permit short-cuts to be taken in order to expedite decisions. Make "speeches." Talk as frequently as possible and at great length.

A separate item, under work assignments, recommends referring matters to committees for further study and consideration, and making those committees as large as possible.

It was declassified in 2008 and has circulated in offices ever since as a joke that is not entirely a joke. The advice works precisely because it was designed to be indistinguishable from ordinary conduct: a saboteur following it cannot be told apart from a colleague having a normal week.