Section 659A.347 - Discrimination related to possession of valid driver license(1) It is an unlawful employment practice for an employer to: (a) Require, as a condition for employment or continuation of employment, an employee or prospective employee to possess or present a valid driver license unless the ability to legally drive is an essential function of the job or is related to a legitimate business purpose.(b) Refuse to accept from an employee or prospective employee, as an alternative to a driver license, any other identification documents that are deemed acceptable for the purpose of forms prescribed by the United States Citizenship and Immigration Services that are used for verifying the identity and employment authorization of individuals hired for employment in the United States.(2)(a) Nothing in subsection (1) of this section shall be construed to prohibit an employer from accepting a driver license as identification if voluntarily offered by an employee or prospective employee.(b) An employer's acceptance of a driver license if voluntarily offered by an employee or prospective employee may not be used as evidence of a violation of subsection (1) of this section.