What Is an Employment Visa?
An employment visa — at times called a work visa — lets a foreign national live and work in the United States legally for a set period, tied to a specific job, employer, or qualifying type. Most are nonimmigrant visas, meaning they’re temporary. Some lead to a green card. Others don’t — but they can be extended or changed.
According to USCIS, there are several types of temporary work visas, each with its own rules, rules, and caps. The right one depends on what you do, who you work for, and how long you need to stay. It’s not one-size-fits-all.
A work visa lawyer finds the right fit and files it right the first time. Simple as that.
Work Visa Services at Attorney Ysabel Williams
Here’s what we handle as your work visa attorney:
H-1B Visa (Specialty Occupation Workers)
The H-1B is the most common U.S. work visa for workers in specialty fields — tech, finance, tech fields, medicine, design fields, and more. It requires a U.S. employer sponsor and a bachelor’s degree or higher in a related field. The H-1B cap lottery runs every spring. As an h1b visa attorney, I handle employer petitions, extensions, and transfers — you’re covered at every stage.
L-1 Visa (Intracompany Transferees)
If you work for a global company and your employer is moving you to a U.S. office, the L-1 is your path. The L-1A covers managers and exec-level staff. The L-1B covers workers with specific knowledge of the company’s products or processes. No cap. No lottery. No annual scramble. As an l1 visa attorney, I handle L-1 petitions for both employees and companies setting up new U.S. offices.
O-1 Visa (Extraordinary Skill)
The O-1 is for people who’ve reached the top of their field — artists, athletes, scientists, business leaders, researchers. It’s not easy to qualify, but when you do, it’s one of the most powerful visas available. No cap. Employer-sponsored or agent-filed. I work with clients to build O-1 petitions that document top-level skill the right way. No cap. No lottery. But the bar is high.
TN Visa (NAFTA/USMCA Professionals)
For Canadian and Mexican nationals in qualifying professions — engineers, accountants, scientists, lawyers — the TN visa is one of the fastest and most cost-effective paths to U.S. work authorization. No cap. No lottery. I handle TN filings at the border and through consular processing.
J-1 and H-1B1 Visas
Exchange visitors, research scholars, and certain workers from Chile and Singapore have their own visa paths. I work across these types for clients who don’t fit the standard H-1B route.
Visa Extensions, Transfers, and Changes of Status
Already in the U.S. on a work visa? Your situation changes. Employers change. Roles shift. I handle H-1B transfers when you switch jobs, extensions when your status is expiring, and changes of status when you need to move between visa types.
Employer Compliance and LCA Filings
Employers who sponsor H-1B workers have compliance duties — Labor Condition Applications, public access files, wage rules. I help employers stay on the right side of the rules so a petition doesn’t get challenged after the fact.
Frequently Asked Questions
Work Visa Basics
What's the difference between an H-1B, L-1, and O-1 visa?
Three different visa types for three different situations. The H-1B is for specialty field workers sponsored by a U.S. employer — it has an annual cap and lottery. The L-1 is for employees being transferred within the same global company — no cap, no lottery. The O-1 is for people with top-level skill at the top of their field — no cap, but a high bar to clear. A work visa attorney helps you figure out which one you actually qualify for.
Do I need an employer to sponsor my work visa?
For most employment visa types — yes. The H-1B, L-1, and many others require a U.S. employer to file the petition on your behalf. The O-1 is an exception — it can be filed by an agent rather than a direct employer, which matters for freelancers, performers, and freelancers. Some types also allow self-filing for people with top-level skill.
How long does a work visa last?
It depends on the type. H-1B visas are issued in three-year increments and can be extended to six years total — and beyond that in some cases tied to a pending green card. L-1A visas run up to seven years. L-1B up to five. O-1 visas start at three years and can be extended in one-year increments. Your work visa lawyer — and your l1 visa attorney if you’re on an L-1 — tracks these deadlines so nothing lapses.
Can my family come with me on a work visa?
Yes, in most cases. H-1B holders’ spouses and children under 21 come on H-4 visas. L-1 dependents get L-2 visas. O-1 dependents get O-3 visas. Spouses of H-1B and L-1 holders may be eligible for work authorization too — depending on the situation. I include dependent filings in every work visa case so families aren’t left behind.
Can a work visa lead to a green card?
Yes — many do. The H-1B and L-1A are common stepping stones to employment-based permanent residence. An employer can sponsor you for an EB-1, EB-2, or EB-3 green card while you’re on a work visa. Some types — like the EB-1A for top-level skill — allow self-filing. I help clients think ahead from day one so the work visa and green card path align.
The H-1B Visa
How does the H-1B cap and lottery work?
Each year USCIS receives far more H-1B petitions than the annual cap allows. Petitions are entered into a random lottery — first for the general cap, then for the advanced degree exemption. If selected, you file the full petition. If not selected, you have to wait for the next year’s lottery — or look at other visa options. As an h1b visa attorney, I handle the full filing once you’re selected and advise on other options if you’re not.
What qualifies as a specialty field for H-1B purposes?
A specialty field requires at least a bachelor’s degree — or equal — in a specific field that’s directly related to the job. Common H-1B fields include IT, tech fields, finance, accounting, medicine, design fields, and schooling. The job and the degree have to line up. USCIS scrutinizes this closely, mainly for IT consulting and staffing positions. I assess the fit before filing.
Can I switch employers on an H-1B visa?
Yes — this is called an H-1B transfer. Your new employer files a new petition, and you can start working for them once it’s filed — you don’t have to wait for approval if you’re already in valid H-1B status. Timing matters a lot here. Talk to an h1b visa attorney before you give notice. I handle H-1B transfers to make the move clean and legally sound.
What happens if my H-1B petition is denied?
It depends on the reason. Some denials can be challenged through a motion to reconsider or reopen. Others point to a problem with the job description, the wage level, or the specialty field argument. I review denial notices and give straight advice on whether fighting it makes sense or whether a different visa type is a better path.
I'm on OPT right now. How does the H-1B process work for me?
If you’re on OPT, your employer needs to file your H-1B petition in the April filing window. If you have a STEM extension, you have extra time. If the lottery selects you, your H-1B status kicks in on October 1 of that year — the cap-gap provision covers you in between. As an h1b visa attorney, I work with OPT holders and their employers to make sure the timing lines up and nothing falls through.
Why Choose the Law Offices of Ysabel Williams for a Work Solutions
An immigration law firm built on lived experience. Founded by an immigrant attorney who understands what it means to navigate immigration law when your family’s future is on the line. After 20+ years representing families in federal court, Attorney Ysabel Williams knows that what matters most is direct attention, honest answers, and someone who actually fights for you. That’s the commitment here.
- 20+ years of hands-on immigration law experience
- Licensed in New Jersey and Pennsylvania
- Authorized federal practice: EOIR Immigration Court, Board of Immigration Appeals, Federal District Courts, Federal Courts of Appeals
- 2,000+ families successfully represented
- Bilingual Spanish-English representation by the attorney handling your case
