Therefore, as a rule of thumb, it has been advised that business professionals should return calls within 24 hours. If for any reason a prompt callback is not possible, for instance, if it is known that the call may be lengthy and the individual does not have time to talk until another day or so, they should still leave a brief voicemail message to acknowledge receipt of the call and advise when they anticipate being able to have the discussion. Additionally, voicemail messages should be checked at least once a day, if not more.
2. Mention Hours of Operation Upfront. Most callers expect their call to be answered. Once they realize that your office is currently closed, the most important piece of information they probably want to know is your standard business hours.

15. “Hello, you’ve reached the Sales Department at [Company name]. All of our representatives are currently helping clients [insert goal such as, ‘achieve 40% growth through streamlining HR’] and are unable to take your call. Instead of putting you on hold and taking up your valuable time, please leave your name, company, and phone number and we’ll give you a call back ASAP. Thank you!”
This after-hours voicemail greeting lets callers know they’re calling outside normal business hours.