Be Your Boss’ Boss
I was on the Go Train last week and cringed to see this slogan on a poster from a well known association.
It’s a grammatical error. When you make a one-syllable word ending in “s,” “x,” or “z” possessive, you must add an apostrophe plus an additional “s.”
Examples (correct – one-syllable words ending in “s”)
Bridget Jones’s Diary
St. James’s Pub
Boss’ boss cannot even be pronounced correctly. It should read Be Your Boss’s Boss.