As an employee you should fight for income taxes to be as high as possible since they are neutral for you and might fund useful things for all. When left in the pocket of your employer they just become their takeaway. Employers won't spend it on improving the company if they don't have to. And the only things that force them to spend money in a predictable manner is regulation and markey opportunity to earn more. When they have those needs they mostly do it with credit anyways.
Conversely as an employer you should advocate for lowest income taxes possible for your workers.