April 1: April Fool's Day (free advice: try not and get fired)
April 1 - 7: Laugh at Work Week
April 2: Love Your Producer Manager Day
April 3: Don't Go to Work Unless It's Fun Day
April 4: Walk to Work Day
April 5: International Pillow Fight Day
April 8: Be Kind to Lawyers Day
April 12: Walk on Your Wild Side Day
April 14: International Moment of Laughter Day
April 16: Stress Awareness Day
April 17: Blah! Blah! Blah! Day/Get to Know Your Customers Day
April 18: Wear Your Pajamas to Work Day
April 23: Admin Professionals Day
April 24: Take Our Sons & Daughters to Work Day
April 25: Hug a Plumber Day
April 29: International Dance Day