At my company there's a match and a direct contribution. The match requires you to contribute 6% of your own money, and the company matches half of that (3%.)
The direct contribution is what the company puts in regardless of what you contribute. So you could choose not to put any of your own money into 401k, and they would still contribute 6% on their own.
Between the 2 the company ends up contributing 9% total. The match is a negotiated benefit, so wherever you get hired, make sure you're contributing at least the minimum amount to take advantage of it.