OCB by Metro Digital Resources Librarian • April 14, 2016 Ordered Call Back (Or Off-Called Back). An operator who has been directed to work on his/her day off. OCBs are called only after the regular work force and the volunteers have been used. Share:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)Like this:Like Loading... Related