Those who work with and around me know that I rarely close my office door, even if I’m having a meeting with someone.
Transparency rules (or should).
Generally, organizational issues are best dealt with from a full-and-open-disclosure mindset/environment. Any business conducted behind closed doors automatically arouses suspicion, which usually fosters lack of trust.
Trust is, in my view, the golden commodity.
Supply problems, profit-loss concerns, organizational morale issues, technology hiccups, etc., belong to the organization and efforts to hide or conceal those from its members is an act of futility (if not outright insanity). Secrecy often implies conspiracy. Conspiracy often implies illegality or unethical behavior. Illegality or lack of ethics cost us respect, business, profit, TRUST!
Ronald Reagan is said to have famously noted that “the walls have ears.” Indeed. We should think twice about closing the door (I think it best to do so only when personal privacy issues are the primary concern).
Trust is a “force multiplier” (a phrase I learned from Colin Powell).
Anything that causes lack of trust (like lots of closed-door meetings) works to the opposite effect.