"Of course"
How often have you heard or said "of course my door is always open" or "of course we're a small and friendly organisation and don't need any more meetings or memos." 

Even if the "door is open" it can be a barrier to employees, particularly those who are young and have little experience of work, or those who are less robust than some of your hail and hearty workers, or someone from an ethnic minority.   Also it can be the open door that is the problem for people with a sensitive problem who would prefer not to be seen walking in, or for the door to be closed after you and then for others to make rash judgements about why privacy is needed.

Of course, the open door is an attitude as well as a physical item; an attitude that I encourage.  But it needs to be deployed in a wider context of having good supervisory relationships at working levels, of regular feedback on work performance including appraisals, and of dealing promptly with conduct and attendance problems, and having an accessible Grievance Procedure.

Also of course, you need to beware of choking the organisation with excessive flows of paper and holding back productivity with too many meetings.  Putting some information or instructions in writing can protect you from future claims of "I was not told that" or "I did not realise that it was important".  Similarly a staff meeting can save time and also ensure that everyone gets the same message or allow the opportunity for feedback and comment.

Finally of course, matters relating to terms and conditions of employment need careful documentation. Something, of course, that I advise on.
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