The cap is the number that decides your cheque
Almost every explanation of workers' compensation starts and ends with "two thirds of your wages." That is true, and it is also the least useful part of the sentence. Missouri's own wording carries the qualifier that matters: temporary total disability pays "66 2/3% of the injured worker's average weekly wage, not to exceed a maximum amount set by the law." The maximum is where the real arithmetic happens.
In Missouri that maximum is 105 percent of the state average weekly wage, which works out to $1,294.71 a week for injuries from 1 July 2026. Two thirds of a wage hits $1,294.71 at an average weekly wage of about $1,942 — roughly $101,000 a year. Below that line you are genuinely replaced at 67 percent. Above it you are not: a worker earning $3,000 a week is replaced at about 43 percent, and a worker on $4,000 a week at about 32 percent. Nothing in the two-thirds rule tells them that, and it is the single most common reason a first payment feels wrong.
The caps move every year and they are not the same everywhere. California's temporary disability maximum for 2026 is $1,764.11 a week, up from $1,680.29, and it also carries a minimum of $264.61 — a floor Missouri's temporary total schedule does not have. Both figures are indexed: California's rose 4.98826 percent because the state average weekly wage rose from $1,704 to $1,789 in the year to March 2025. The number that governs your claim is the one in force on your date of injury, not today's, so a 2024 injury settled in 2026 is still paid at the 2024 cap.
Two thirds of gross is more than it sounds
The replacement rate looks harsher than it is, because the comparison is unfair. Your wage was taxed; the benefit is not. IRS Publication 525 states that "amounts you receive as workers' compensation for an occupational sickness or injury are not included in your income," with a narrow exception where state law treats part of the payment as a pension based on years of service.
So two thirds of gross often lands close to 80 or 85 percent of what you were actually taking home, for a worker below the cap. That does not make the shortfall painless, but it does change the calculation on whether to return to light duty early, and it changes what a settlement is worth relative to wages. Compare the benefit against your net pay, not your gross.
The first days you miss
Nearly every state has a waiting period, and most make it retroactive if you are off long enough. Missouri does not pay "for the first three business days or less of disability," but adds that "if you are unable to work for more than 14 days the 'three-day waiting period' will be paid." Both numbers — the wait and the threshold that claws it back — are set by state law and vary widely.
The practical consequence is a cliff. Being off thirteen days and being off fifteen days are not two days apart in money; the second one also returns three days of benefits the first one forfeits. If your return-to-work date is being negotiated near that line, it is worth knowing the line is there.