How worksharing actually works — and what it does not
Worksharing agreements are the mechanical lever that makes the 300-day extension administratively viable. Without them, every dual-filed charge would sit in a state agency's exclusive 60-day processing period before the EEOC could touch it — most state agencies don't have the headcount to process every charge that lands. So the EEOC and each state FEPA agreed: the state agency waives its §706(c) exclusive period for almost every charge, in exchange for the EEOC routing the charge back to the state for the state-law claim if the charging party wants to preserve it.
In practical terms, this means a charging party files once. The verified charge form names the basis (e.g. sex discrimination) and the statute(s) invoked (Title VII + state FEHA). The agency that receives the charge forwards a copy to the partner agency, both treat the charge as received on the original filing date, and the EEOC begins investigating immediately. The state-court SOL — which runs independently — is not tolled by the federal filing. If you want state-court remedies, calendar the state SOL separately.
The ADEA wrinkle in practice
ADEA's extension requires state-level age law plus a state enforcement agency. This is narrower than the Title VII rule, which counts both state and local agencies. The practical effect:
- An age-only charge in Alabama (which has the Alabama ADEA — Ala. Code §25-1-20 et seq. — and the Alabama Department of Labor enforcing it) is a 300-day jurisdiction for ADEA despite Alabama lacking a Title VII FEPA. The age statute alone qualifies for the extension.
- A worker in New York City with only the NYC Human Rights Law's age provisions (not the state-level New York Human Rights Law) gets 180 days on the ADEA clock. The local ordinance does not trigger the extension.
- A worker in Wyoming, which has the Wyoming Fair Employment Practices Act (W.S. §27-9-101 et seq.) including age coverage and the Wyoming Fair Employment Practices Commission — gets 300 days on both ADEA and Title VII tracks.
When state law gives you longer than the federal extension
For four states the state-court SOL meaningfully exceeds the federal 300 days. The dual-filing posture there is unusual: filing the federal charge does not toll the state clock, but the state clock runs substantially longer, so a federal-deadline miss is not a complete bar.
- California — FEHA SOL is 3 years (1,095 days) since AB 9 (2020), per Cal. Gov. Code §12960(e). California also covers more protected bases than Title VII (ancestry, marital status, sexual orientation, gender identity, gender expression, military status, medical condition).
- Illinois — IHRA filing window extended to 730 days in 2024 (was 180 days previously, then 300 days post-2010).
- Ohio — state-court SOL was significantly compressed and rearchitected post-2021; current state-court SOL is 2 years on most bases.
- New York — NY State HRL allows 3 years; NYC HRL also 3 years; both run independently of the federal clock.
Even in these states, the federal 300-day window is the one the EEOC uses. State-court remedies under FEHA / IHRA / NY HRL run on the state-law clock. A charging party who wants both has to satisfy both — file federal within 300, file state within whatever state law says.
The federal-employee carve-out
Federal civilian employees and applicants do not use any of this. The 45-day agency EEO counselor contact rule under 29 CFR §1614.105 replaces the 180/300-day EEOC charge process entirely. There is no state FEPA equivalent; there is no worksharing agreement between the federal agency EEO offices and any state. The "mixed case" appeal path (MSPB + EEO simultaneously) is the closest thing to a parallel-track posture, and it's federal-only. Read the federal-employee path pillar →
OFCCP for federal contractors
Federal-contractor employees follow the standard 180/300-day EEOC charge process for Title VII / ADA / ADEA / GINA claims. They may also have a parallel OFCCP complaint path under Executive Order 11246 (race / color / religion / sex / national origin) and Executive Order 13988 (sexual orientation / gender identity, post-2021). The OFCCP route does not replace the EEOC charge — it sits alongside, with different timelines and different remedies (administrative compliance review rather than individual back-pay). Which track makes sense is fact-specific and is generally an attorney-counsel decision.