At the option of the insurer, any U. C. D. policy may contain a provision relative to examination of the person of the insured employee, but any such provision shall be in the following form only or in the substance thereof:
"The insurer shall have the right and opportunity to examine the person of the insured when and so often as it may reasonably require during the pendency of claim hereunder except where such right is limited by the California Unemployment Insurance Code."
Cal. Code Regs. Tit. 10, § 2244.7