you are forgetting that its a "human" centric world

What are the labour laws for your area? (a simple google search will tell you.) Well, those laws haven't really changed. To give you an example, this is the BC labour laws for hiring children:
"
Hiring children
9 (1) A person must not employ a child under 15 years of age unless the person has obtained the written consent of the child's parent or guardian.
(2) A person must not employ a child under 12 years of age without the director's permission.
(3) On permitting the employment of a child under 12 years of age, the director may set the conditions of employment for the child.
(4) An employer must comply with the conditions of employment set under subsection (3)."
http://www.bclaws.ca/Recon/document/ID/freeside/00_96113_01So by BC law, my company can not hire anyone less than 15 years of age, unless we have a note their parents. (not an issue)
If they are under 12 years of age, I have to contact the Ministry for Family Services, and receive a WRITTEN permission from the Director's office to employ them (Good luck! Takes about 3 to 5 months when I tried to get my daughter a part time job in the office for the summer I had her). And even then, they can set such random shit, it's pointless.In my daughter's case, she was only allowed to work 2 hours a day to a max of 10 hours a week. Could not start before 10am and could not work past 6pm.
Now, how does this tie into SR?
Easy, many of these laws are still in place in SR, and while some people are fighting to change it, there are so many groups with much bigger pockets and much more clout that are resisting the changes. (Humanis Policlub is a BIG one in this field, and remember, they are a political party - they actually have people IN the government!)
And remember, just because at 9 years old, an ork has the mass of a 18 yr old human, they still have the mental capacity of a 9 year old. How many 9 year olds you know that have the responsibility and maturity to actually hold a job that isn't delivering newspapers?
When is retirement age? 65 same as it has always been. (or if you buy into the those 'freedom 55' commercials, 55. Yet every single person I know who signed up for it, are still working in their 60s.....)
Pensions run off of time worked with a company that offers them. Usually requiring 25 to 35 years of service to collect the Full amount, which the possibility to collect a partial amount usually after 15+ years worked. (varies)
(check with your employer, when do you get the full amount or a partial amount?)
So what does this mean for Orks? They get the screw-over. They'll die of old age before retirement, and they can't work long enough to even get a partial pension. You are not getting a job that offers a pension without education, which means completing high-school and getting a degree. Remember, Unions were effectively Crushed out between 1997 with the Trucker Strike in NYC which lead to hundreds dying, the rise of the Mega-corps and Extraterritorality agreements.
Starting to see why Orks are the primary residents of Barrens and low income areas?