Retirement tax questions

Can I enter this extra income on the “W-2 worksheet” where it allows me to enter an amount that should have been listed in box 8 , and wasn’t? This extra money was given to all drivers when they completed bus trips where there were no cash tips given. I would prefer to link it with his w-2 info since it was listed on his pay stubs rather then to list as misc income, not linked to his pay from this company.