Not really? If the people want to get through the locked doors throughout the office, they'll need someone to let them through the doors. At least where I work, the receptionists don't have that access. They need to call people who do have universal door access to let them in. Unless the cops just want to battering-ram their way through all the doors for the fun of it...

Also, a raid without a warrant is not a raid. It's a friendly visit to someone's office.