One shouldn't operate heavy machinery when drowsy.
Ralph tried his new allergy medication while he was at work and is beginning to feel tired and unusual from it.
Ralph wants to get a full day of work.
Ralph tells his supervisor he isn't feeling well, and he is given desk jobs that he can complete without any risk.
Ralph doesn’t mention his condition to his supervisor and begins to work using the forklift.
Ralph works despite his fatigue and goes home after working all day.
Ralph finds himself getting very sleepy towards the end of his shift and nods off while driving, running the forklift into a nearby wall.