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Missouri new-hire reporting: check the W-4 date as well as the work date
Source checked: November 11, 2026. This is a state-specific reporting-method guide, not a complete account of hiring obligations.
The trigger is not always the first paid-work day
Missouri Revised Statutes §285.300 defines the hire date as the earlier of the date the employee signs a W-4 or equivalent form, or the first date the employee reports to work or performs labor or services. Do not automatically use the first payroll date or import another state’s paid-work trigger. [1]
When onboarding paperwork is signed before work starts, bring both dates to the reporting team. This guide does not calculate a deadline or decide disputed employment facts.
Compare general and electronic timing
| Method | What the Missouri statute says |
|---|---|
| General report | Within 20 days after the date the employer hires the employee. |
| Magnetic or electronic report | Two monthly transmissions, if necessary, at least 12 and no more than 16 days apart. |
Source: §285.300. Missouri’s employer FAQ also describes the 20-day rule and two monthly electronic transmissions, but its short timing answer mentions only the 16-day maximum. Read that summary with the statute rather than treating the omitted minimum as a different rule. [1][2]
Returning workers and temporary agencies
Missouri’s employer FAQ says a returning worker must be reported when a new W-4 is required. For temporary workers, it distinguishes the agency paying wages from a business that only refers people for employment. It also describes when a break in service and a new W-4 can require another report. Check those facts with the responsible employer rather than assuming each placement is a new report. [2]
Prepare a clear reporting handoff
Record the W-4 or equivalent signing date, the first work or service date, the reporting state, the submission method and the person or provider responsible. Ask that team to confirm the applicable trigger and schedule from current official instructions and check the submission result.
These are workflow suggestions, not a statutory record-retention policy or proof of an accepted report. Do not submit employee information through this GoodState guide.
Official sources and planning help
[1] Missouri Revisor — §285.300. Trigger, timing and multistate provisions; source checked November 11, 2026.
[2] Missouri Employer Reporting — FAQ. Returning workers, temporary workers, reporting methods and timing summary; source checked November 11, 2026.
For workers in several states, confirm the reporting-state arrangement before applying a Missouri schedule. Read the national methods guide or open the free Compliance Calendar for planning examples to confirm with the agency. This is not a complete hiring checklist or a filing service.