Ask for a copy of the Summary Plan description. That should tell you what the 'current' match will be. Companies are not generally required to contribute on your behalf, nor are they required to keep the same 'match' every year. If your plan is a Profit Sharing plan, they may only contribute once a year after they have determined the profits for the previous year.
If the company has a match in place, you should see their contribution versus your contribution on your statements, once you start getting them.
If you already have online access to your new retirement plan, it would be worth the few minutes to go through the site and see if the SPD is already available. Many of the new plans have it available on the site with other plan notifications and information. In many cases this will be the fastest and most direct route to find the information you're looking for. For example Fidelity would store that document in the section "Plan Information and Documents" if they have it in your case
If, on the other hand, your looking for specific information on you, as apposed to the general rules, you'll normally find this on your statement or online in the contributions section. Most plans will show you the breakout of personal deferrals and company contributions and also how much of the company contribution is currently vested.
Each 401(k) has a Summary Plan Description document available through your human resources department. This will outline the plan including vesting and company contributions. This should also be able to direct you to the plan administrator who can provide more details. So start with HR.
