OPT 20 Hours a Week: Does Part-Time or a Second Job Stop the Unemployment Clock?

One decision table for every combination of hours and employers — full time, 20-plus, under 20, unpaid, two jobs at once — plus the STEM OPT branch where 20 hours is a hard regulatory floor for every single employer.

The offer has a number on it: 24 hours a week. Or 18. Or 15 plus a second gig you have not mentioned to anyone yet. And you have no idea whether that number keeps you legal.

The number you need is 20 hours per week. USCIS states that a student authorized for post-completion OPT "must work part time (at least 20 hours per week) or full time". Anything less does not satisfy the employment requirement on its own, and the days keep accruing against your 90-day unemployment cap even while you are working and getting paid.

That number is the same on both kinds of OPT, and it means two completely different things. Your situation is a point on two axes — how many hours and how many employers — and the STEM OPT extension changes the answer on both. The table below is a lookup: find your row.

⚠️ Read this first — the 20-hour rule works differently on the STEM extension. On initial post-completion OPT, 20 hours a week is the threshold for your overall qualifying employment picture, unpaid work can count, concurrent employers are normal, and your DSO has room to assess a genuine arrangement. On the 24-month STEM OPT extension, 20 hours is a regulatory minimum for each employer under 8 CFR 214.2(f)(10)(ii)(C)(8), unpaid work does not count at all, self-employment is off the table, every employer must be enrolled in E-Verify, and every employer needs its own signed Form I-983. If you are on STEM OPT, the initial-OPT answers below will mislead you. Read your column of the table and then skip to the STEM sections.

The decision table

Whichever row you are on, the action is the same three steps: get it in writing, get it to your DSO, get it into SEVIS. Nothing protects you until it is in the record.

This table tells you which row you are on. It cannot tell you whether your DSO will agree that your work is directly related to your major, or whether a particular consulting or agency arrangement is a bona fide employer-employee relationship — both of those are judgment calls the regulations assign to your DSO and, ultimately, to USCIS. Before you rely on an unusual arrangement to hold your status, get your DSO's answer in writing. If you have already been working below the line, or working for an employer whose arrangement you are unsure about, that is a question for an immigration attorney, because the exposure is unauthorised employment rather than a reporting error.

Where the 20-hour number actually comes from

This is the part the university pages skip, and it changes how much room you have.

On post-completion OPT, the 20-hour threshold is agency guidance, not regulation. USCIS's OPT page carries the operative sentence — post-completion OPT students "must work part time (at least 20 hours per week) or full time." SEVP's policy guidance of September 27, 2019 on determining a direct relationship between employment and a student's major area of study puts a number on "full time" in a footnote: "For the purpose of this policy, full time is considered to be 20 hours or more per week." The regulation at 8 CFR 214.2(f)(10) does not itself set an hours floor for post-completion OPT; what it sets is the 90-day unemployment cap.

On STEM OPT, it is regulatory and explicit. Under 8 CFR 214.2(f)(10)(ii)(C)(8), the terms and conditions of the training opportunity — duties, hours and compensation — must be commensurate with those of the employer's similarly situated US workers, except that a STEM OPT participant must work at least 20 hours per week. DHS states the practical version without hedging: students must be employed for no less than 20 hours per week by each qualifying STEM OPT employer.

Why the distinction is worth your attention: on initial OPT your DSO has some room to assess a real situation, and on STEM OPT there is no room at all. Treat 20 hours as binding in both cases, but understand that on STEM OPT a shortfall is a regulatory failure with a specific paperwork remedy.

Pre-completion OPT is the mirror image, and it costs you later. While school is in session you may work 20 hours or less; full time only when school is not in session. And the deduction bites: a year of part-time pre-completion OPT reduces your available full-time post-completion OPT by six months, and a year of full-time pre-completion OPT wipes out your post-completion entitlement entirely.

One timing note that people conflate with the hours rules and should not: if your STEM OPT filing is pending when your current EAD expires, there is a separate automatic-extension mechanism. See the 180-day automatic extension while your STEM filing is pending.

Two jobs on initial OPT — how concurrent employment actually works

OPT permits concurrent employment. SEVIS is built for it: employer records attach to a single OPT authorization, each with its own start date, end date, full/part-time flag and mandatory explanation of how the job relates to your course of study.

The reporting mechanics people get wrong, straight from the SEVIS Help Hub:

• Add the new employer before you shorten or remove the old one. SEVP spells out the order explicitly, because entering it the other way round makes SEVIS accrue false unemployment days.
• Never overwrite an existing employer record with a new employer's details. Add; do not replace.
• Every employer start and end date must fall inside your Actual OPT-approved period of work authorization. Dates outside that window distort the unemployment calculation and put you on the "Students who have Approved OPT without Current Employer Information" alert list that DSOs monitor.

SEVP also addresses several situations directly, which is useful because they are exactly the arrangements students assume are unreportable:

For remote and multi-site arrangements specifically, remote roles and where your work location is recorded goes deeper. If you are considering freelance income, read freelance and 1099 income on F-1 and starting your own company on OPT before assuming those hours count automatically.

The strategic read if you have just been laid off: a 20-hour degree-related role is a full stop on the clock, not a half-measure. Two 12-hour roles are also a full stop — if both are reported and your DSO agrees the combination qualifies. And a 20-hour unpaid role at a nonprofit or university lab can do the same work on initial OPT, with conditions.

Two jobs on STEM OPT — four independent gates

Each of these is a separate failure point. Clearing three of four is clearing none.

1. E-Verify. Every employer must be enrolled in and using E-Verify. One compliant employer does not cover the other, and a new employer must be enrolled before you begin to work for pay.

2. A separate Form I-983 for each employer, signed by you and the employer, submitted to your DSO within 10 days of beginning the new practical training opportunity. When you change employers you must also submit your final self-evaluation within 10 days of your last day with the previous one. If the gap between employers runs longer than 10 days, report the loss of employment to your DSO first and submit the new I-983 afterwards. The Form I-983 training plan in detail walks through each section.

3. At least 20 hours per week per employer, not in aggregate.

4. A bona fide employer-employee relationship. DHS is direct about this: you cannot qualify unless you will be a bona fide employee of the employer signing the I-983, because a student may not provide employer attestations on their own behalf. The employer may not be your employer "in name only," and you may not work for that employer on a volunteer basis.

On the agency question, the DHS guidance is more precise than the version that circulates. You may use a staffing or temporary agency to find a training opportunity. The agency cannot complete and sign the Form I-983. Only the E-Verified employer that provides the actual training relevant to your qualifying STEM degree may sign it. If an agency places you in short-term opportunities with several different employers, you need a new I-983 for every new opportunity with each employer. A start-up can host STEM OPT training, but someone other than you has to be the person signing on the employer's behalf.

Two operational details worth knowing before you are surprised by them: STEM employer records require the EIN plus the supervisor's name, phone number and email address, and STEM OPT participants cannot add employers themselves in the SEVP Portal — the Add Employer button does not appear. You send the completed I-983 to your DSO, the DSO enters the employer in SEVIS, and it shows up in your portal the day after.

When your hours change — the material-change rule nobody reads

If your employer cuts the team to 18 hours, your compliance failed on the day the schedule changed, not on the day someone notices.

DHS lists these as material changes requiring you and your employer to sign a modified Form I-983, submitted to your DSO at the earliest available opportunity:

• Any change of the employer's Employer Identification Number resulting from a change in the employer's ownership or structure
• Any reduction in compensation that is not tied to a reduction in hours worked
• Any significant decrease in hours per week you engage in the training opportunity
• Any decrease in hours below the 20-hours-per-week minimum

Note that the last two are separate listed items. A drop from 40 to 25 is reportable even though 25 is above the floor.

Riding alongside are the evaluation deadlines, which are the other common quiet failure: a self-evaluation within 12 months of the EAD start date and a concluding evaluation, both signed by you and your employer, submitted to your DSO no later than 10 days following the end of the relevant reporting period. If a training opportunity ends early, the final evaluation is due within 10 days of the end. You also have 10 days to report the end of employment.

The practical instruction is one sentence: if a schedule change is coming, get the modified I-983 signed before it takes effect.

What the clock is actually counting

The stakes, briefly. Federal law caps unemployment at 90 days on post-completion OPT and 150 days across post-completion plus STEM OPT, per 8 CFR 214.2(f)(10)(ii)(E) — and the 150 includes any days you already accrued on post-completion OPT. Unemployment during a cap-gap extension counts too.

SEVIS calculates it mechanically: it looks back to your Actual OPT Start Date and counts every day without employer information in the record. Not every day you were idle — every day the record is empty. A student doing genuine 30-hour-a-week degree-related work that nobody reported is, as far as SEVIS is concerned, unemployed.

SEVP also states that the SEVIS auto-terminate function for exceeding the unemployment limit is currently disabled. Read that exactly as written: it is a reason not to expect an instant termination email, and it is not a reason to believe the cap is unenforced. The counter still runs and the record still shows it, and a later USCIS adjudication is where it surfaces. For the full mechanics, see the full mechanics of the 90-day unemployment clock.

One separate change to be aware of and not to conflate with any of the above: DHS published a final rule on July 17, 2026 replacing duration of status with a fixed period of admission for F students, effective September 15, 2026, under which students generally must apply for an extension of stay with USCIS to engage in post-completion OPT or STEM OPT. DHS's transition guidance provides that current F students admitted for duration of status who are present in the United States when the rule takes effect and who timely filed for post-completion OPT or STEM OPT by March 18, 2027 do not need to file a separate extension-of-stay application. It does not change any of the hours rules on this page. Check DHS's quick facts page for your own situation and talk to your DSO about timing.

The five mistakes that cost people the clock

1. Counting hours you were not paid for and did not report. SEVIS counts records, not effort. An unreported role protects nothing.
2. Assuming a 15-hour job is "mostly fine." It stops nothing. You can be employed, paid, busy and accruing unemployment days simultaneously.
3. Adding a second STEM employer without a second I-983. One I-983 covers one employer, full stop.
4. Letting hours drop below 20 on STEM OPT without a modified I-983. The failure is silent and dated to the schedule change.
5. Taking any-job-is-a-job advice. Unrelated paid work — retail, rideshare, hospitality — does not pause the clock at any number of hours, because the employment has to be directly related to your major area of study. You are the one responsible for describing that relationship, and your DSO reviews and retains the description.

Frequently asked questions

Does a part-time job stop the OPT unemployment clock?

Yes, if it is at least 20 hours a week and directly related to your major. USCIS states that a student authorized for post-completion OPT "must work part time (at least 20 hours per week) or full time." Below 20 hours a week the position does not satisfy the employment requirement on its own, and the days keep counting toward your 90-day limit even though you are working and being paid.

Can I combine two part-time jobs to reach 20 hours?

On initial post-completion OPT this is the ordinary approach. OPT permits concurrent employment with more than one employer, and SEVIS holds multiple employer records against a single OPT authorization. Each employer has to be separately reported with its own start date, hours and explanation of how the work relates to your degree, and you should get your DSO's confirmation in writing that the combination satisfies the requirement. On the 24-month STEM OPT extension the answer is different — the 20-hour minimum applies to each employer individually, so two 12-hour STEM roles do not add up to compliance.

How many hours per week does STEM OPT require?

At least 20, per employer, and it is regulatory rather than policy. Under 8 CFR 214.2(f)(10)(ii)(C)(8) the terms and conditions of the training opportunity — including duties, hours and compensation — must be commensurate with those of the employer's similarly situated US workers, except that a STEM OPT participant must work at least 20 hours per week. DHS states it without hedging — students must be employed for no less than 20 hours per week by each qualifying STEM OPT employer.

Can I work for two employers at the same time on STEM OPT?

In principle yes, but each one has to independently satisfy every STEM requirement. Each employer must be enrolled in and using E-Verify, each needs its own signed Form I-983 submitted to your DSO within 10 days of the new training opportunity starting, each needs its own DSO entry into SEVIS, and each must give you at least 20 hours a week. The employer that signs the I-983 must be the entity actually providing the training — a staffing or temporary agency cannot sign it — and the employer may not be your employer in name only. In practice, two fully compliant concurrent STEM employers is rare.

Does unpaid or volunteer work count toward the 20 hours?

On initial post-completion OPT it can. SEVP recognises volunteering and unpaid internships as qualifying employment if the work is directly related to your degree, the arrangement does not violate labor law, it runs at least 20 hours a week, and your DSO records it in SEVIS with volunteer status noted. On the STEM OPT extension it cannot — DHS states that volunteer positions do not meet the conditions of a STEM OPT extension and that you must receive compensation for your training opportunity.

I dropped from 30 hours to 18 on my STEM OPT job. What do I have to do?

Tell your DSO now, because that is a material change. DHS lists as material changes any change of the employer's Employer Identification Number resulting from a change in ownership or structure, any reduction in compensation not tied to a reduction in hours, any significant decrease in hours per week, and any decrease in hours below the 20-hours-per-week minimum. You and your employer must sign a modified Form I-983 and submit it to your DSO at the earliest available opportunity. Fixing this on paper is routine; discovering it during a later USCIS adjudication is not.

Does self-employment or freelancing count toward the 20 hours?

On initial post-completion OPT it can, with conditions — SEVIS has a self-employed flag and a field for the primary location where the work is performed, and your DSO has to be satisfied the work is degree-related and genuine. On STEM OPT it cannot; the SEVIS Help Hub states that students on the STEM extension cannot be self-employed, and the extension requires an E-Verify employer with an EIN and a named supervisor on the I-983. Talk to your DSO before relying on freelance hours in either case.

This article is general information, not legal advice. Whether your particular role is directly related to your major, and whether a particular consulting or agency arrangement is a bona fide employer-employee relationship, are judgment calls the regulations assign to your DSO and ultimately to USCIS — get your DSO's answer in writing before you rely on an unusual arrangement, and speak to an immigration attorney if you have already been working below the line. F1Jobs works with international students through the whole OPT window, from holding the clock to landing the sponsor-track role.