Older work mate being "exploited"

[commonrails]

Well as the title says I was made aware today that a fellow work mate in his 60's is imho being exploited by his site supervisor. He starts work at or before 6am at our office then travels to the site in question (about 1/2 hour drive) and then works until 4pm if he arrives before 10am on site or works past 4pm for every minute he arrives passed 10am. Now this is what I don't like, they are only paying the poor bloke for a standard 8 hour day. I said to him that I will go to the boss and or even confront the site supervisor myself, however he asked me not to as in his own words "where is a bloke my age going to get another job". I'm pretty well ****ed off and even ashamed to work for this company (that I won't name) if that's how they let people be treated. So my question is do I say something even if it's an anonymous complaint to fair work or let it lie as requested by the person effected?