---
type: "Bill"
title: "Insurance; reinsurance; eligibility credit for reinsurance; modify. Amends secs. 1103 & 1105 of 1956 PA 218 (MCL 500.1103 & 500.1105) & adds sec. 1106."
description: "Insurance; reinsurance; eligibility credit for reinsurance; modify. Amends secs. 1103 & 1105 of 1956 PA 218 (MCL 500.1103 & 500.1105) & adds sec. 1106."
jurisdiction: "us/states/mi"
legislature: "Michigan Legislature"
session: "2017-2018"
identifier: "SB 638"
citation: "Michigan SB 638 (2017-2018)"
classification: ["bill"]
subjects: ["Insurance: reinsurance", "State agencies (existing): insurance and financial services"]
status: "enacted"
primary_sponsors: []
version_count: 5
action_count: 30
vote_count: 3
first_action: "2017-10-31T04:00:00+00:00"
last_action: "2018-04-10T04:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/59cf4157-ba3d-4927-879f-fc52e1bdb9a3"
source_url: "http://legislature.mi.gov/doc.aspx?2017-SB-0638"
source_hash: "8a30ec8cf548b6703a8a4be2a669a24aeb3ec1f5a9927b034682d66e60c3b660"
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-mi"]
---

# Michigan SB 638 (2017-2018) — Insurance; reinsurance; eligibility credit for reinsurance; modify. Amends secs. 1103 & 1105 of 1956 PA 218 (MCL 500.1103 & 500.1105) & adds sec. 1106.

## Version chain

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

1. **As Passed by the House** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/Senate/htm/2017-SEBH-0638.htm)
2. **As Passed by the Senate** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billengrossed/Senate/htm/2017-SEBS-0638.htm)
3. **Public Act** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/publicact/htm/2018-PA-0091.htm)
4. **Senate Concurred Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billconcurred/Senate/htm/2017-SCB-0638.htm)
5. **Senate Introduced Bill** (committee substitute) — [source](http://www.legislature.mi.gov/documents/2017-2018/billintroduced/Senate/htm/2017-SIB-0638.htm)

## Votes

- PASSED ROLL CALL # 482 YEAS 36 NAYS 0 EXCUSED 2 NOT VOTING 0 — **36–0** (pass) · upper
- ROLL CALL # 126 YEAS 36 NAYS 0 EXCUSED 1 NOT VOTING 0 — **36–0** (pass) · upper
- passed; given immediate effect Roll Call # 123 Yeas 108 Nays 1 — **108–1** (pass) · lower

## Sponsors

- 20 — cosponsor (person)
- Margaret O'Brien — cosponsor (person)

## Timeline

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

- **2017-10-31T04:00:00+00:00** INTRODUCED BY SENATOR MARGARET O'BRIEN `introduction`
- **2017-10-31T04:00:00+00:00** REFERRED TO COMMITTEE ON INSURANCE `referral-committee`
- **2017-11-30T05:00:00+00:00** REPORTED FAVORABLY WITH SUBSTITUTE S-1 `committee-passage`
- **2017-11-30T05:00:00+00:00** COMMITTEE RECOMMENDED IMMEDIATE EFFECT
- **2017-11-30T05:00:00+00:00** REFERRED TO COMMITTEE OF THE WHOLE WITH SUBSTITUTE S-1 `referral-committee`
- **2017-12-05T05:00:00+00:00** REPORTED BY COMMITTEE OF THE WHOLE FAVORABLY WITH SUBSTITUTE S-1 `committee-passage`
- **2017-12-05T05:00:00+00:00** SUBSTITUTE S-1 CONCURRED IN
- **2017-12-05T05:00:00+00:00** PLACED ON ORDER OF THIRD READING WITH SUBSTITUTE S-1
- **2017-12-06T05:00:00+00:00** PASSED ROLL CALL # 482 YEAS 36 NAYS 0 EXCUSED 2 NOT VOTING 0 `passage`
- **2017-12-06T05:00:00+00:00** received on 12/06/2017 `introduction`
- **2017-12-06T05:00:00+00:00** read a first time `reading-1`
- **2017-12-06T05:00:00+00:00** referred to Committee on Insurance `referral-committee`
- **2018-02-15T05:00:00+00:00** reported with recommendation with substitute H-1 `committee-passage`
- **2018-02-15T05:00:00+00:00** referred to second reading
- **2018-02-28T05:00:00+00:00** read a second time `reading-2`
- **2018-02-28T05:00:00+00:00** substitute H-1 adopted
- **2018-02-28T05:00:00+00:00** placed on third reading
- **2018-03-01T05:00:00+00:00** read a third time `reading-3`
- **2018-03-01T05:00:00+00:00** passed; given immediate effect Roll Call # 123 Yeas 108 Nays 1 `passage`
- **2018-03-01T05:00:00+00:00** inserted full title
- **2018-03-01T05:00:00+00:00** returned to Senate
- **2018-03-06T05:00:00+00:00** HOUSE SUBSTITUTE H-1 CONCURRED IN
- **2018-03-06T05:00:00+00:00** ROLL CALL # 126 YEAS 36 NAYS 0 EXCUSED 1 NOT VOTING 0
- **2018-03-06T05:00:00+00:00** GIVEN IMMEDIATE EFFECT
- **2018-03-06T05:00:00+00:00** FULL TITLE AGREED TO
- **2018-03-06T05:00:00+00:00** ORDERED ENROLLED
- **2018-03-15T04:00:00+00:00** PRESENTED TO GOVERNOR 3/14/2018 @ 2:04 PM `executive-receipt`
- **2018-04-10T04:00:00+00:00** APPROVED BY GOVERNOR 3/26/2018 @ 12:12 PM `executive-signature`
- **2018-04-10T04:00:00+00:00** FILED WITH SECRETARY OF STATE 3/26/2018 @ 3:10 PM
- **2018-04-10T04:00:00+00:00** ASSIGNED PA 0091'18 WITH IMMEDIATE EFFECT

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/59cf4157-ba3d-4927-879f-fc52e1bdb9a3`. Confidence: reported (aggregated from official Michigan legislature records).