Soul-crushing labor, intolerable co-workers, hour-long shifts that feel like days. We’ve all been there, no? Playwright Will Snider digs into the unlikely evolution of restaurant employees in the (wait for it) sharp-edged comedy How to Use a Knife, which is stuffed with memorable characters. Among them are a chef whose career is shredded by years of booze and pills; a dishwasher who everyone assumes is mute, a busboy who is a walking target for bullying and a trio of Guatemalan cooks who’s biting observations about their co-workers need no translation even if you don’t speak Spanish. It runs through June 9 at Shattered Globe Theatre at Theater Wit, 1229 W. Belmont Ave. Admissionis $15-$35 each; visit ShatteredGlobe.org.