I didn't work with the company very long but I saw a few unethical things being performed there:
Lying recruiters: The recruiters will fabricate information, promise vacations, promise future promotions, promise anything in order to hire somebody.
Secrecy around compensation: managers were not being paid equally and were encouraged to not talk about compensation with each other so that they wouldn't find out the disparity.
Erosion of benefits and trust: Things that are perks are thought of as lofty privileges not worth investing by upper management. They will try to take things away including parking.
Fake interviews for positions already filled: They will open a position with a candidate already picked out but will put out requests for applicants for needless interviews.
Punishing people for being sick: Unless you are able to give proper 48 hour notice, you will be docked for taking sick time and are encouraged to work sick. Leading to a workplace full of sick people.
Salaried people encouraged to work off the clock: the company hosts many meetings that are considered mandatory for all salaried individuals regardless if it's on a day off or not.
Fake promotions: Your title and role will change and your workload will increase without any monetary compensation. You will still be responsible for your previous responsibilities as well.
Now to the not unethical and just unpleasant:
No support. Company ballooned out without setting up proper support infrastructure so they're in a constant game of catch up
No holidays. Ever.
Policies are rolled out without regard to input from anybody and are treated in a "don't like it? leave" attitude
Should be a high level support center, is treated like a call center for telemarketers
Management that is lazy in some areas or lack interpersonal skills
Stifled promotion path with weak annual raises (that you can't discuss with others)
Management don't care about turnover rate
