It is unlawful for any person to refuse or deny employment to a person because the person refuses to relinquish seniority rights earned at a prior place of employment.
86 Acts, ch 1089, §1
Iowa Code § 731.9
Relinquishment of seniority rights as a condition of employment prohibited
Official source: Iowa Legislature. Reproduced from public-domain Iowa statutes; confirm against the official source for the current text. Not legal advice.