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Applicable Missouri Statutory Requirements

Absence of Statewide Trade Licensing for Mechanical Trades

mo:statute:rsmo-324

Missouri has no statewide licensing board for electricians, plumbers, or HVAC mechanics. Trade licensing is administered and enforced exclusively at the local county or municipal level.

Locator: RSMo Chapter 324 Table of Sections

County and Municipal Contractor Licensing Framework

mo:statute:const-art6

Under Missouri Home Rule powers, major metropolitan areas (including St. Louis County, Kansas City, and the City of St. Louis) enforce mandatory contractor licensing, examination requirements, and surety bonding before permits can be issued.

Locator: Mo. Const. art. VI, § 19

Missouri Construction Industry Workers' Compensation Mandate (1+ Employees)

mo:statute:rsmo-287

Under RSMo § 287.030.1(3), all employers in the construction industry that erect, demolish, alter, or repair buildings must carry workers' compensation insurance if they employ one or more employees (in contrast to the 5-employee threshold for non-construction businesses).

Locator: RSMo § 287.030.1(3)

Verification Sources

mo:agency:dolirboard page
Missouri Department of Labor and Industrial Relations (DOLIR) — Division of Workers' Compensation
Missouri Department of Labor Workers' Compensation Division
https://labor.mo.gov/dwd/workers-comp
verified 2026-10-12retrieved 2026-10-12
mo:local:kcmo-contractorboard page
City of Kansas City, Missouri — City Planning & Development (Contractor Licensing)
City of Kansas City — Contractor Licensing Guidelines
https://www.kcmo.gov/city-hall/departments/city-planning-development/contractor-licensing
verified 2026-10-12retrieved 2026-10-12
mo:local:stlouis-countyboard page
St. Louis County Department of Transportation & Public Works — Licensing
St. Louis County Department of Transportation & Public Works — Contractor Licensing
https://stlouiscountymo.gov/st-louis-county-departments/transportation-and-public-works/licensing
verified 2026-10-12retrieved 2026-10-12
mo:statute:const-art6statute
Missouri General Assembly — Joint Committee on Administrative Rules & Revisor of Statutes
Missouri Constitution Article VI § 19 — Local Home Rule Powers
https://revisor.mo.gov/main/OneSection.aspx?section=VI.19
verified 2026-10-12retrieved 2026-10-12
mo:statute:rsmo-287statute
Missouri General Assembly — Joint Committee on Administrative Rules & Revisor of Statutes
RSMo Chapter 287 — Workers' Compensation Law (§ 287.030 Construction Industry Mandate)
https://revisor.mo.gov/main/OneChapter.aspx?chapter=287
verified 2026-10-12retrieved 2026-10-12
mo:statute:rsmo-324statute
Missouri General Assembly — Joint Committee on Administrative Rules & Revisor of Statutes
RSMo Chapter 324 — Division of Professional Registration (Verified Absence of State GC Board)
https://revisor.mo.gov/main/OneChapter.aspx?chapter=324
verified 2026-10-12retrieved 2026-10-12