Quick Read
Union “lost-time” checks compensate members for performing union duties and count as wages under Social Security’s earnings test, not reimbursements.
Combined factory and union wages of $32,000 exceed the 2026 earnings limit by $7,520, triggering up to $3,760 in withheld Social Security benefits.
Benefits withheld under the earnings test are not permanently lost; Social Security recalculates and restores them once a worker reaches FRA.
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Picture a 63-year-old machinist who starts Social Security early but keeps a reduced schedule at the factory. He carefully limits his hours so his plant wages remain below the annual earnings-test threshold. Then his union asks him to investigate grievances, attend safety meetings, and help negotiate the next contract.
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Every shift spent on union business costs him factory pay, so the local makes him whole through lost-time checks. He thinks of them as reimbursements, not earnings. The money merely replaces wages he would have received for working the line. Social Security sees another paycheck.
Lost-time payments generally compensate union officers, stewards, and committee members for services performed while they are away from their regular jobs. When the union reports those payments as wages and withholds Social Security and Medicare taxes, they join the factory wages in the earnings-test calculation. The classification as reimbursement does not make them invisible.
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How Two Paychecks Break His Plan
Suppose the machinist earns $23,000 from the plant in 2026, keeping him just below Social Security’s $24,480 earnings limit for someone who remains under full retirement age (FRA) all year. He then receives $9,000 in lost-time wages from the union. He may see $23,000 of work income plus $9,000 that merely replaced missed shifts. Social Security sees $32,000 in combined wages. That puts him $7,520 above the limit. Under the 2026 rule, Social Security can withhold $1 in benefits for every $2 above the threshold, producing a potential withholding of $3,760.
Story Continues
The union payment did not make him richer than if he had worked every scheduled factory shift. But it still compensated him for performing union duties. That is what makes it wages instead of repayment for an out-of-pocket expense. Actual reimbursements for documented travel, lodging, supplies, or other union expenses can receive different treatment. Lost-time pay replaces earnings. Expense reimbursement repays money the worker spent. Putting both on the same voucher does not make them the same thing.
The Same Wages Can Help Later
The Social Security treatment is not entirely negative. If FICA is withheld and the union reports the checks in Box 3 of Form W-2, those wages should also reach the worker’s Social Security earnings record. Social Security calculates retirement benefits using a worker’s 35 highest earning years, adjusted for wage growth. If the combined factory and union wages replace a weaker year in that calculation, they could eventually raise his monthly benefit.
Benefits withheld under the earnings test are not simply lost. Once he reaches FRA, Social Security recalculates his benefit to account for months in which payments were withheld. The immediate cash-flow hit is real, but it is not the same as a permanent dollar-for-dollar forfeiture. That leaves him with an unusual trade-off. The lost-time checks can reduce the Social Security money reaching his bank account today while potentially strengthening the earnings record used to calculate his benefit tomorrow.
Why the Reporting Matters
A worker receiving payments from both the factory and the union may receive two W-2s. Looking only at the plant form can create a nasty surprise because Social Security combines covered wages across employers when applying the earnings test. The union’s designation is not decisive. Calling a payment lost time, an allowance, or a reimbursement does not settle its federal tax treatment. What matters is why it was paid, what activity the member performed, and how the union reported it.
What to Check Before Taking Social Security
Before assuming reduced factory hours will keep earnings below the limit, take these four steps:
Add the Social Security wages in Box 3 across every expected W-2, including forms from the union.
Ask the union’s treasurer or payroll provider whether lost-time payments are treated as wages and whether FICA is withheld.
Separate compensation for union work from documented reimbursement of actual expenses.
Report changes in expected earnings to Social Security before they create an overpayment.
The machinist did the math on his factory schedule correctly. He simply left out the employer whose name was on the second check. When Social Security tests his earnings, the plant and the union do not get separate limits.
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