Iowa Code
Chapter 731 - LABOR UNION MEMBERSHIP
Section 731.9 - Relinquishment of seniority rights as a condition of employment prohibited.

731.9 Relinquishment of seniority rights as a condition of employment prohibited.
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