What Is Required for Certification in Alberta to Operate a Knuckle Boom Picker? This is one question we are asked, emailed about is; “What certification is do I need to operate knuckle boom cranes legally in Alberta?”. While there is no ‘legal’ requirement, there is an OHS standard that if not interpreted properly, could lead to legal issues if an OHS officer investigates a recordable incident where an individual has been injured or worse.  OHS officers have had the legal power to issue a civil fine or charge to companies or individuals that have incorrectly performed their job if it was proven to be negligent.  “Picker certification” of often misunderstood as being a trade (like journeyman electrician, plumber, welder, etc.),