401k, how does it benefit your employer?

So your company matches a percentage of your contribution to your 401k.
I have heard the speech from my employer's 401k representative of how a 401k will benefit "you the employee" but when I asked how does a 401k benefit the employer the answer was "Your employer sets up a 401k to show it's appreciation for it's hardworking employee's and that's also why they match part of your contribution"
I then asked " The company that handles all the investment made to the 401k, how much money do they make?
What do they charge and who pays that fee? I never got an answer to my question, just the initial speech again. So how does a 401k bebefit a employer. I would think they would have to get some types of deductions that would make it profitable for them. After all, nothing is truely free.

That sounds like the answer my boss would give. I want to know the $$ value.The dedeuctions. Example, no company is going to pay you more money then you earn them. If they did they would go out of business. So if they match your 401k they have to make it up somehow. I want to know how.
Thank you

Your employer pays for the administrative costs of setting up the 401k. Why do they do this? So they can stay competitive in the market to attract good employees.

That's why it's called "employee benefit." Like insurance, health coverage, they are good wills of the company to provide good benefits.

dido with the other guy.
Only some companies offer 401k and not too many, except better ones offer to match it 100%(and they only match it to a certain amount) Companies need to offer these benefits in order to keep their employees happy otherwise they will find other companies that offer these benefits. Companies know that everyone needs retirement and in order for you to retire you need a 401k. the 401k is a way for you to save for retirement and them matching your contribution is a way for the company saying thanks. Ask a banker to explain it better, If I didn't.