BUSINESS SUPPORT AND STAFFING Companies in United States: Full List
Approximately 172,640 real businesses classified under Administrative and Support Service Activities in United States, with officer, shareholder and beneficial ownership records sourced directly from official government registries.
Approximately 172,640 real businesses operate in the Administrative and Support Service Activities sector across United States. The company cleaning your office and the company you signed the contract with are often not the same legal entity. Staffing, security, cleaning, call-centre, and travel-agency services routinely operate through franchise or master-agency arrangements, meaning the locally branded operator answering your calls is not necessarily owned by the brand you recognise.
69 companies in this sector are indexed on Zavia so far, part of a continually growing dataset.
Beneficial-ownership and registration rules for Administrative and Support Service Activities companies in United States follow the same national framework as every other sector there.
Full United States beneficial ownership overviewTop Administrative and Support Service Activities Companies in United States
Live from the register. Every row opens the full record — officers, shareholders and resolved group structure.
Analysis
What this data actually tells you
Administrative and support services in the United States — including staffing and temporary-employment agencies, where the staffing firm is typically the legal co-employer of assigned workers — operate under labor law that varies significantly by state. At-will employment is the default rule in 49 states and DC, meaning either party may generally end the employment relationship without cause; Montana is the sole exception, its 1987 Wrongful Discharge from Employment Act requiring "good cause" for termination once a probationary period ends, making it the only US state to have statutorily displaced at-will employment for private-sector workers.
Right-to-work laws, which prohibit mandatory union-membership or dues payment as a condition of employment, are currently in effect in 26 states as of 2026. As of 2026, at least 17 states plus DC also require paid sick-leave accrual for temp/staffing workers on par with permanent employees, with assigned workers typically gaining equal pay/overtime/rest-break rights matching comparable permanent staff after 12 weeks in a role. Counterparties verify which specific labor-law regime actually applies to a given staffing or administrative-support engagement based on the operating state, rather than assume uniform nationwide employment terms.
Who uses United States administrative and support service activities ownership data
The three checks this sector's data is most often run for.
At-Will Employment / Montana Exception Verification
At-will employment is the default in 49 states and DC; Montana is the sole exception — its 1987 Wrongful Discharge from Employment Act requires "good cause" for termination after a probationary period; counterparties verify a staffing/employment relationship’s actual governing state law directly, especially for Montana-based engagements.
Right-to-Work State Verification
Right-to-work laws (prohibiting mandatory union dues as a job condition) are in effect in 26 states as of 2026; counterparties verify which specific labor-law regime actually applies to a given staffing or administrative-support engagement based on the operating state.
Get complete shareholder and officer records, ultimate beneficial owner resolution, and ongoing ownership monitoring for United States companies — via API or a bulk data feed.
Frequently Asked Questions
How many Administrative and Support Service Activities companies are registered in United States?
Approximately 172,640 real businesses operate under Administrative and Support Service Activities in United States.
What does the Administrative and Support Service Activities sector include in United States?
The company cleaning your office and the company you signed the contract with are often not the same legal entity. Staffing, security, cleaning, call-centre, and travel-agency services routinely operate through franchise or master-agency arrangements, meaning the locally branded operator answering your calls is not necessarily owned by the brand you recognise.
How is company ownership disclosed for Administrative and Support Service Activities companies in United States?
The same national framework applies here as for every other sector in United States — there is no sector-specific beneficial-ownership regime for Administrative and Support Service Activities.
Can I see all industries present in United States?
Yes — the United States company directory lists every industry with recorded companies for that jurisdiction, alongside the full beneficial-ownership overview for United States.
Can I see Administrative and Support Service Activities companies in other countries?
Yes — the Administrative and Support Service Activities sector directory lists every country with recorded Administrative and Support Service Activities companies on Zavia.
Can Zavia monitor changes to Administrative and Support Service Activities companies in United States over time?
A directory listing is a snapshot, not a live feed. Zavia's monitoring API tracks changes to registered shareholders, officers, and group structure for Administrative and Support Service Activities companies in United States going forward, flagging updates as they are filed instead of requiring a manual recheck.
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