WITH JULIETTE GOODRICH. >>> HELLO, I'M SARA DONCHEY IN TONIGHT FOR JULIETTE. >>> SOME OF THE CONCERNS FROM THE CITY'S BIGGEST EMPLOYERS, KAISER IS TELLING WORKERS NOT TO LEAVE THE BUILDING FOR LUNCH OUT OF FEAR FOR THEIR SAFETY. THEY ARE NOT ALONE. TAKING SECURITY MATTERS INTO THEIR OWN HANDS. >> Reporter: FROM MOM AND POP RESTAURANTS TO BIG BUSINESSES EVERYONE HERE IS FEELING THE EFFECTS OF CRIME. KAISER IS THE LATEST AND THE LARGEST EMPLOYER IN OAKLAND TO SOUND THE ALARM. >> Reporter: KAISER OWNS MULTIPLE BUILDINGS IN OAKLAND. EMPLOYS THOUSANDS OF WORKERS. A COMPANY MEMO TO DOWNTOWN WORKERS RECOMMEND THEY STAY IN THEIR BUILDINGS DURING LUNCH AND BRING THEIR OWN FOOD OR HAVE IT DELIVERED, ROBBERIES OF KAISER WORKS LED TO THE ALERT. >> I WILL EAT, WALK AROUND, DO A FEW LAPS, AFTER THOSE MEMOS I AM A LITTLE HESITANT. >> Reporter: THIS KAISER EMPLOYEE WORKS AT THE MEDICAL SENT OR BROADWAY. >> A LOT OF BREAK INS IN THE GARAGES OVER HERE, CARS HAVE BEEN SET ON FIRE. WINDOWS BROKEN. >> Reporter: HIS CAR NOW HAS A KILL SWITCH TO PREVENT IT FROM GETTING STOLEN. >> WE HAVE THE ARMED SECURITY NOW, YOU KNOW, WALKING AROUND, PATROLLING. THEY HAVE A HOT LINE THEY CAN GET A WALK TO A CAR. THEY WILL HAVE SECURITY GO WITH THEM. >> Reporter: OTHER LARGE CORPORATIONS ARE DOING SOMETHING SIMILAR. CLOROX AND BLUE SHIELD TOLD CBS NEWS PAY AREA THEY PROVIDE SECURITY GUARDS TO ESCORT WORKERS TO B.A.R.T, PARKING GARAGES AND RESTAURANTS. BLUE SHIELD OF CALIFORNIA SAID IN A STATEMENT WE ARE PROVIDING VARIOUS OPTIONS FOR WHEN THEY COME INTO THE OFFICE INCLUDING RIDE SHARING SERVICES, PAID PARKING AND PRIVATE SECURITY >> DOWNTOWN LOOKS LIKE A GHOST TOWN. IT IS DISHEARTENING. >> Reporter: MANY NOTICE DOWNTOWN OAKLAND WAS QUIET ON FRIDAY DURING THE LUNCH HOUR. THEY SAY WHILE THEY UNDERSTAND WHY KAISER IS RECOMMENDING WORKERS TO STAY INSIDE, THEY WORRY MORE RESTAURANTS WILL CLOSE. >> IT IS A SAD SITUATION. PEOPLE SHOULD BE ABLE TO GET OUT AND SMELL THE FRESH AIR DURING LUNCHTIME >> I DON'T AGREE WITH IT. I WILL NOT BE TOO FEARFUL TO GO OUT AND GET LUNCH. >> Reporter: KAISER IS COMMITTED TO ENSURING THE SAFETY AND SECURITY OF OUR EMPLOYEES, WE MONITOR OUR ENVIRONMENTS FOR CONCERNS, REVIEW OUR PRACTICES, AND STRENGTHEN THEM WHEREVER POSSIBLE. WHILE NOT EVERYONE AGREES WITH KAISER'S APPROACH, MOST PEOPLE AGREE OAKLAND IS EXPERIENCING A PUBLIC SAFETY CRISIS. >> IT IS LIKE THE CITY HAS FALLEN OFF OF A CLIFF. >> WHEN IT COMES TO CRIME IT IS UNHINGED. >> Reporter: DANIEL SAYS HE SUPPORTERS HIS EMPLOYER. >> IT HAS NEVER BEEN THIS BAD. ONLY GETTING WORSE. HOPEFULLY IT GETS BETTER. >> Reporter: KAISER SAYS THEY ARE COMMITTED TO OAKLAND. A SPOKESPERSON SAYS THE NATIONAL HEADQUARTERS WILL STAY IN OAKLAND. >> THE MAYOR'S OFFICE SAYS THE CITY IS MAKING PROGRESS IN ADDRESSING COMMUNITY SAFETY IN OUR BUSINESS DISTRICTS WHERE MANY OF KAISER'S FACILITIES ARE LOCATED. OAKLAND EXPERIENCED REDUCTIONS IN PROPERTY CRIME AND BUSINESS DISTRICTS ACROSS THE CITY, SHE SAID. >>> ALL OF