Depending on the drawer slides there may be a lock on the slide or if not, a separate drawer catch. In my coach my kitchen drawer would continually open. I installed a child proof strap on the drawer until I was willing to take the coach in for warranty service, which is now. The dealer informed me last week that they adjusted the lock on the drawer slide and it functions correctly at this time.
You may also want to consider installing a push pull latch on the drawer.