---
type: "Bill"
title: "A bill for an act establishing a minimum age and training requirements for attendants who control amusement rides, and making penalties applicable. (Formerly HF 92.) Effective date: 04/30/2021."
description: "A bill for an act establishing a minimum age and training requirements for attendants who control amusement rides, and making penalties applicable. (Formerly HF 92.) Effective date: 04/30/2021."
jurisdiction: "us/states/ia"
legislature: "Iowa General Assembly"
session: "2021-2022"
identifier: "HF 558"
citation: "Iowa HF 558 (2021-2022)"
classification: ["bill"]
subjects: ["amusement parks", "amusement rides", "occupational safety and health"]
status: "enacted"
primary_sponsors: []
version_count: 4
action_count: 18
vote_count: 3
first_action: "2021-02-16"
last_action: "2021-06-07"
source: "openstates"
source_identifier: "ocd-bill/55c84cf5-197c-45e6-b4f2-b67a06c298fc"
source_url: "https://www.legis.iowa.gov/legislation/billTracking/billHistory?billName=HF 558&ga=89"
source_hash: "8a593d3c4f5752dfbc70c73e9063c6d8f7afb4c0fb9267547598f23020221053"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ia"]
---

# Iowa HF 558 (2021-2022) — A bill for an act establishing a minimum age and training requirements for attendants who control amusement rides, and making penalties applicable. (Formerly HF 92.) Effective date: 04/30/2021.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](https://www.legis.iowa.gov/docs/publications/LGI/89/attachments/HF558.html)
2. **Amendment S-3140** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/89/S3140.pdf)
3. **Signed Enrolled Bill (PDF)** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGE/89/Attachments/HF558_GovLetter.pdf)
4. **Enrolled** (enrolled) — [source](https://www.legis.iowa.gov/docs/publications/LGE/89/attachments/HF558.html)

## Votes

- Shall the bill pass? — **76–17** (pass) · lower
- Shall amendment S-3140 be adopted? — **17–27** (fail) · upper
- Shall the bill pass? — **29–15** (pass) · upper

## Timeline

The legislative action history — every referral, reading, and vote.

- **2021-02-16** Introduced, placed on calendar. `introduction`
- **2021-02-18** Fiscal note.
- **2021-02-23** Passed House, yeas 76, nays 17. `passage`
- **2021-02-24** Explanation of vote.
- **2021-02-25** Explanation of vote.
- **2021-05-19** Explanation of vote.
- **2021-02-23** Immediate message.
- **2021-02-24** Message from House.
- **2021-02-24** Read first time, attached to companion SF 114. `reading-1`
- **2021-04-01** Placed on calendar under unfinished business.
- **2021-04-07** Substituted for SF 114.
- **2021-04-07** Amendment S-3140 filed, lost. `amendment-introduction`
- **2021-04-07** Passed Senate, yeas 29, nays 15. `passage`
- **2021-04-07** Immediate message.
- **2021-04-07** Message from Senate.
- **2021-04-30** Reported correctly enrolled, signed by Speaker and President, and sent to Governor.
- **2021-04-30** Signed by Governor. `executive-signature`
- **2021-06-07** Fiscal note.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/55c84cf5-197c-45e6-b4f2-b67a06c298fc`. Confidence: reported (aggregated from official Iowa legislature records).