negative. unions basically keep the company in check with the amount of profit they make to fair wages for the employees. look at walmart, a multi billion dollar business. they are non-union which allows them to pay their employees basically nothing and make huge profits every year. if they did go union walmart would blame that for having to up their prices, but the real reason would be because their profit margin at the end of the year is less because they have to pay their employees fair wages.
thats why there is “inflation”