No Guns in Workplace (2 pts).
No Guns on College Campuses (2 pts).
*****
There is no law I am aware of which disallows guns in the workplace or on college campuses.
This article:
http://www.bloomberg.com/news/2012-12-12/guns-to-work-laws-spread-in-u-s-as-business-fights-group.html
indicates that there are a number of states that prohibit employers from disallowing employees from having firearms in their vehicles on company property; PA does not appear to be one of those states, though there was legislation pending as of the date of the article to rectify this.
That's not the same as a law which prohibits firearms at workplaces, but the Brady Campaign appears to give PA 2 points for not protecting the rights of employees to store firearms in their vehicles while at work.
or on college campuses.
This appears to have changed quite recently:
http://www.insidehighered.com/news/2013/05/13/pennsylvania-universities-limbo-over-guns
http://pittsburgh.cbslocal.com/2013/05/13/some-pa-state-schools-now-allowing-guns-on-campus/