California Worker's Classification Code Changed For Walking Through Plant

A recent review by our company showed that a premium auditor in California reclassified a worker just for the fact that the employee had to walk through the plant to get to his workstation as an administrative assistant (class code 8810). There is no other path that the employee could have taken unless he crawled through an office window. The employee was reclassified as a manufacturing worker even though he never touches any of the equipment. Should the employer have to build a special covered walkway just for this employee? I will cover this later in the week.