I'm not sure what your situation is like. At a previous job there were about 200 employees total and the office was not open to the public. There was bike parking for about 10 bikes under one of the stairways and I never locked my bike, Trek 7.5FX, and neither did a few others. Some used very basic locks. The company fleet of bikes was always locked up unless an employee checks it out. The fleet was 4 comfort, 5 performance hybrid, and 1 tricycle rated for 500lbs stashed under another stairwell.