If your goal is to build a career in the United States, you will encounter two related but distinct journeys: temporary work visas that let you work for a period of time, and the employment-based green card that grants permanent residence. Understanding how they fit together — and the realistic timelines involved — is the key to planning a move that holds up legally and professionally. This guide breaks down the most common US work visa types and walks through the employment-based green card process step by step.
Common US work visa types
Temporary (nonimmigrant) work visas let you live and work in the US for a specific employer and period. The right one depends on your profession, nationality, and employer. The most common include:
H-1B — specialty occupation: for roles requiring a bachelor's degree or higher in a specific field. It is the best-known work visa and is subject to an annual cap and a lottery, because demand far exceeds the roughly 85,000 new spots available each year.
L-1 — intracompany transfer: for employees moving from an overseas office to a US branch of the same company, either as managers/executives (L-1A) or specialized-knowledge staff (L-1B). No annual lottery.
O-1 — extraordinary ability: for individuals with demonstrated national or international acclaim in fields such as science, business, the arts, or athletics.
TN — USMCA professionals: for Canadian and Mexican citizens in qualifying professions under the USMCA trade agreement.
E-2 / E-3: treaty-investor visas (E-2) for nationals of treaty countries, and a special category (E-3) for Australian professionals.
- H-1B — specialty occupation: for roles requiring a bachelor's degree or higher in a specific field. It is the best-known work visa and is subject to an annual cap and a lottery, because demand far exceeds the roughly 85,000 new spots available each year.
- L-1 — intracompany transfer: for employees moving from an overseas office to a US branch of the same company, either as managers/executives (L-1A) or specialized-knowledge staff (L-1B). No annual lottery.
- O-1 — extraordinary ability: for individuals with demonstrated national or international acclaim in fields such as science, business, the arts, or athletics.
- TN — USMCA professionals: for Canadian and Mexican citizens in qualifying professions under the USMCA trade agreement.
- E-2 / E-3: treaty-investor visas (E-2) for nationals of treaty countries, and a special category (E-3) for Australian professionals.
Each visa has its own rules on duration, renewals, and whether your spouse can work, so match the category to your situation carefully.
The employment-based green card: permanent residence
A green card grants permanent residence and a path to citizenship. US law makes roughly 140,000 employment-based green cards available each year, divided across five preference categories, with per-country limits that create long waits for applicants from high-demand countries.
EB-1: priority workers — people of extraordinary ability, outstanding professors and researchers, and certain multinational executives and managers.
EB-2: professionals with advanced degrees or exceptional ability. This category includes the National Interest Waiver (NIW), which lets some applicants skip employer sponsorship by showing their work benefits the US.
EB-3: skilled workers, professionals, and other workers.
EB-4: certain special immigrants, including some religious workers.
EB-5: immigrant investors who make a qualifying investment that creates jobs.
- EB-1: priority workers — people of extraordinary ability, outstanding professors and researchers, and certain multinational executives and managers.
- EB-2: professionals with advanced degrees or exceptional ability. This category includes the National Interest Waiver (NIW), which lets some applicants skip employer sponsorship by showing their work benefits the US.
- EB-3: skilled workers, professionals, and other workers.
- EB-4: certain special immigrants, including some religious workers.
- EB-5: immigrant investors who make a qualifying investment that creates jobs.
The process and steps
For most employment-based green cards (especially EB-2 and EB-3), the path runs through several stages:
Step 1 — PERM labor certification: the employer tests the US labor market and obtains certification from the Department of Labor that no qualified US worker is available. The NIW and EB-1 generally skip this step.
Step 2 — I-140 immigrant petition: the employer (or the applicant, for NIW/EB-1A) files a petition establishing the job and the applicant's qualifications.
Step 3 — wait for a visa number: your "priority date" must become current under the monthly Visa Bulletin before you can take the final step. For applicants from countries with heavy demand, this wait can be the longest part of the journey.
Step 4 — adjustment of status or consular processing: once a visa is available, you file to adjust status (if you are in the US) or complete consular processing abroad to receive the green card.
- Step 1 — PERM labor certification: the employer tests the US labor market and obtains certification from the Department of Labor that no qualified US worker is available. The NIW and EB-1 generally skip this step.
- Step 2 — I-140 immigrant petition: the employer (or the applicant, for NIW/EB-1A) files a petition establishing the job and the applicant's qualifications.
- Step 3 — wait for a visa number: your "priority date" must become current under the monthly Visa Bulletin before you can take the final step. For applicants from countries with heavy demand, this wait can be the longest part of the journey.
- Step 4 — adjustment of status or consular processing: once a visa is available, you file to adjust status (if you are in the US) or complete consular processing abroad to receive the green card.
Estimated timelines
Timelines vary enormously and depend heavily on your category and country of birth. As a rough guide, PERM and I-140 stages together often take many months to over a year, and premium processing can speed the petition stage. The visa-number wait is the wildcard: for many countries it is short, but for applicants from the highest-demand countries it can stretch for years due to per-country limits. Because these waits shift monthly, the official Visa Bulletin and USCIS processing-time pages are the only reliable place to check where things stand.
Tips for a smoother journey
Start early and keep meticulous records — petitions live or die on documentation. If you may qualify for EB-1 or an NIW, explore it, because skipping PERM can save significant time. Maintain valid status throughout, and coordinate closely with your employer and an immigration attorney, since a small filing error can reset months of progress.
How a work visa connects to a green card
For many people the two journeys are not separate — a temporary work visa is the bridge to permanent residence. A common path looks like this: you enter on a work visa such as an H-1B or L-1, your employer begins the green card process while you work, and you transition to permanent residence once your petition is approved and a visa number becomes available. Choosing a visa that allows "dual intent" — the legal ability to pursue a green card while holding a temporary visa — matters here, because some categories do not permit it.
Thinking about the destination early shapes a smarter first step. If permanent residence is your goal, discuss the green card timeline with an employer before you accept a role, and favor visa categories and companies with a track record of sponsoring permanent residence. The right temporary visa today can quietly set up the green card you want tomorrow.
Frequently asked questions
Do I need a job offer to get an employment-based green card?
Usually yes — most categories require employer sponsorship. The main exceptions are EB-1A (extraordinary ability) and the EB-2 National Interest Waiver, which allow you to self-petition.
Can I switch employers during the process?
Sometimes, depending on the stage and "portability" rules. Changing jobs can affect a pending case, so get legal advice before you move.
How long does the whole process take?
Anywhere from about a year to many years, driven mostly by your category and country of birth. The petition stages are relatively predictable; the visa-number wait is what varies most.
This article is general information, not legal advice. Immigration rules, fees, and timelines change often — always confirm the latest details with official sources before acting.
The route from a work visa to a green card is a marathon, not a sprint — but a well-planned one is entirely navigable. Know your visa options, understand the green card categories, and track the Visa Bulletin closely. Our Career Package and membership library can help you put this into action.