If you visit workforce.com, you will find a place where you can visit a forum where HR managers make posts and read posts about all sorts of problems. This is valuable stuff for your newsletter because it tells shows you in black and white and with numbers the concerns human resource managers have. Simply cruse the topics for discussion and hit the back post topics too. See what post topics are getting the he most "views". These are the concerns, arguably that HR managers have most on their minds. See if you can't create content around them. Here are only ten, but subjects over 2000 views number about 50.
Text Messaging Policies and Issues
Employees Who Are Always a Little Late
Managing Mentally Ill Employees
Divorce and It's Affect on Workers
Unusual Bathroom Habits Due to Culture or Religion
Employees Bringing Children to Work
Stealing and Lying Employees
Childcare Referral Issues
Tips for Success in HR in Working with Managers and
Can you imagine any articles? I can!