The Fence

Story, first published: Space Science Fiction, Sep. 1952

A man with a dismal PS (Personal Satisfaction rating) finds intrigue in an invisible fence that can't be crossed.

Wikipedia: Clifford D. Simak

"The Fence" is the story of one man waking up to find that his existance of boredom and comfort was not at all what he thought it was.

OAKSHAMAN: Amazon Customer Review