It is the policy of this state that an individual with a disability shall be employed in the state service, the service of the political subdivisions of the state, in the public schools, and in all other employment supported in whole or in part by public funds on the same terms and conditions as an individual who is not disabled, and an employer may not refuse employment to an individual with a disability on the basis of his or her disability alone, unless it is shown that the particular disability prevents the satisfactory performance of the work involved.