I write a column in ACM Queue magazine called "Everything Sysadmin" (guess where I got the idea for the name?). It appears 3 times a year.
The new issue is out and contains a column that answers 2 questions: one is "How can I devalue my work?" and the other is about scheduling substitutions for oncall schedules.
Queue is free to ACM members (use your ACM account username/password). You can purchase a 1-year subscription for $19.99 or buy a single issue for $6.99.
To read the issue online or via the Queue App (iPhone and Android), go here: http://queue.acm.org/app/landing.cfm