Employment verification

hi, i m from bangladesh. i am going to lodge the visa application for 189. 1. what type of employment verification is done? is it phone call, email or physical visit? 2. if physical visit is done, will the co go to the head office or my workstation (factory)? 3. will they call me for verification? regards, Faruqe
1. Any of the three. 2. Hard to say. Depends on the specified address i would guess. 3. They may do.