This question is in regards to a quasi-federal railroad agency.
The corporation has a moonlighting policy that allows you to work a second job, so long as it isn't a conflict of interest or in the transportation industry. All "crafts" are allowed to work their expertise on the side (IE Electricians, Carpenters, etc), with the exception of the police "craft". The police "craft" has a restriction that employees can not work secondary police or security jobs.
Furthermore, the corporation allows all other "crafts" to hold jobs as police and security, with a confirmed case of conductor holding a poloce job.
My question is if this seemingly disparate discrimination is legal.