This app is called "Hourly Chimes," but doesnt include a "chime" option--only a cuckoo clock or a gong, neither of which is appropriate in a professional setting.
Too bad it doesnt include options to have the chime ring, say, 2, 5, or 10 minutes before the hour. These seem like easy upgrades, and would greatly increase the utility of the app.
perfessr about Hourly Chime in Background