"Efficient" is defined as working without waste or using a minimum of time, effort and expense. But, the definition is silent about the goals of the operation. A person can be very efficient at what they are doing but still not get to where they want to be because they aren’t doing the right things. That’s where "effective" comes in. "Effective" means "having the desired result". Once the desired overall result is defined, the tasks leading to the result can be isolated and these tasks can then be completed efficiently….

So, while your business’s specific goals will determine how to be effective, being efficient is a little more universal.  In fact, the average worker wastes 2 or more hours  a day because he is distracted by conversations, ringing and/or buzzing phones, and who knows what else…A loss of 2 hours per employee is not exactly efficient.  One option might be sound masking.  Most people can’t work in ceaseless clamor, but at the same time, they can’t be productive in silence either.  Sound masking is like white noise in that it provides a low-level "hum" that can help workers to tune out irritating distractions that keep them from being productive. Many companies and small businesses have found that plugging the leak of conversational distractions is more than worth the initial investment.