What is the longest shift you can legally work in a day?

Asked by: Abelardo Kuhn  |  Last update: April 5, 2026
Score: 4.2/5 (39 votes)

Legally, in the U.S., there's generally no federal limit on daily work hours for adults, but state laws (like California's) mandate overtime pay after 8 hours and double-time after 12, with few exceptions, while OSHA recommends shorter shifts for safety, though it's not a binding law. For specific safety-sensitive roles (pilots, truckers) and certain countries (UK), limits like 11 hours of daily rest (max 13-hour shift) or averaging hours over weeks apply, but for most US workers, it's about overtime compensation for extended shifts, often up to 12 hours or more in healthcare.

What is the longest legal work shift day?

Presently, no OSHA standard to regulate extended and unusual shifts in the workplace exists. A work period of eight consecutive hours over five days with at least eight hours of rest in between shifts defines a standard shift. Any shift that goes beyond this standard is considered to be extended or unusual.

What is legally the longest shift you can work?

Is there a limit to how much I can work each day? Yes. You should get 11 hours consecutive rest each day. This means your working day should not be more than 13 hours long in each 24-hour period that you are working for your employer.

Is working 13 hours a day illegal?

The standard workday in California is eight hours. Non-exempt employees typically cannot exceed 40 hours per week without receiving overtime pay. Therefore, the answer to "how many hours can you work in a day" is usually eight, unless specified otherwise in an employment contract.

Is a 16 hour shift legal?

There is no limit on the number of hours employees 16 years or older may work in any workweek. The FLSA does not require overtime pay for work on weekends, holidays, or regular days of rest, unless overtime is worked on such days.

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31 related questions found

What is the maximum shift length for OSHA?

A normal work shift is generally considered to be a work period of no more than eight consecutive hours during the day, five days a week with at least an eight-hour rest.

What is the 8 and 80 rule?

The "8/80 rule" refers to an overtime exception in the Fair Labor Standards Act (FLSA) for certain healthcare facilities, allowing them to pay overtime (1.5x regular rate) for hours over 8 in a workday or 80 in a 14-day period, rather than the standard 40-hour workweek rule, provided there's an agreement with employees. It's an alternative to the typical overtime calculation, offering scheduling flexibility for hospitals and residential care, but it requires strict adherence to the 14-day period and prohibits using both systems for one employee. 

What is the 7 minute rule for clocking in?

To calculate time using the 7-minute rounding rule: Look at the minutes past the quarter-hour. If it's 0-7 minutes, round down to the quarter-hour. If it's 8-14 minutes, round up to the next quarter-hour. For example, 8:07 AM rounds to 8:00 AM, while 8:08 AM rounds to 8:15 AM.

Is it legal to work 14 hours in one day?

Under California law, if you work more than eight hours in a day or 40 hours in a week, you could be owed one and a half times your regular rate of pay for any hours worked above the first eight.

What is the 4 hour rule?

The "4-Hour Rule" primarily refers to a food safety guideline for potentially hazardous foods, stating they must be discarded if left in the temperature danger zone (41°F-135°F or 5°C-60°C) for over 4 hours; it also appears in productivity as limiting deep work to 3-4 hours daily and in UK healthcare for emergency department waiting times. In food safety, the rule distinguishes between under 2 hours (safe to refrigerate), 2-4 hours (use immediately, don't refrigerate), and over 4 hours (discard) to prevent rapid bacterial growth.
 

What's the longest shift you can work in one day?

In general the maximum average working week is 48 hours. As a night worker, you should not work more than an average of 8 hours in a 24-hour period. The average is calculated over either: A 2-month period.

What are the signs of overworking?

Signs you might be overworked

Increased stress and anxiety. Lack of motivation or interest in the activities you enjoy at work and at home. Burnout. Low productivity.

Can I work 20 hours a day?

Generally, no, there are no federal laws that limit how many hours you can work in a single day. (Though some state labor laws have maximum hour laws for minors.) The federal law that applies to all employees is the Fair Labor Standards Act, or FLSA. This law does not regulate how many hours you can work in a day.

What's the longest shift you can work by law?

Basic rules. An employee may work a maximum of 12 hours a day unless an exception occurs. An employee is entitled to one 30-minute paid or unpaid break after the first 5 hours of work for shifts that are between 5 and 10 hours long.

Is 8 to 4 an 8 hour shift?

Yes, 8 AM to 4 PM is an 8-hour block, but it's typically a 7 or 7.5-hour paid shift because most standard 8-hour days include an unpaid 30-60 minute lunch break, making the total time at work 8 hours, but paid hours less. The 8-4 schedule covers 8 hours (8 AM to 4 PM), but breaks need to be factored in, so you'd work 7-7.5 hours and get paid for 7-7.5 hours (or 8 hours depending on company policy). 

What is the longest a shift can legally be?

In the U.S., there's no federal limit on the number of hours an adult (16+) can work in a day or week, but state laws, industry rules (like for nurses or transport), and union contracts often add restrictions, with some states (like CA, NV) requiring daily overtime and specific sectors (healthcare) having caps, while OSHA notes fatigue concerns for very long shifts. 

What are the consequences of overworking?

Overworking increases the risk of cardiovascular diseases and stroke, as well as affecting mental health. Physical and mental strain of the overworked people can start from acute physiological responses such as fatigue, stress, impaired sleep, and unhealthy lifestyle changes in response to the stress.

Can you work 16 hours per day?

What are the maximum hours I can be expected to work over an average working day? Workers covered by the Working Time Regulations 1998 must not be required to work more than 13 hours per day and must not be required, against their wishes, to work an average of more than 48 hours a week.

Is time clock rounding wage theft?

Yes, time clock rounding can be wage theft if it's used to consistently shortchange employees, violating the Fair Labor Standards Act (FLSA) which allows rounding only if it's neutral (fairly rounds up and down) over time, not favoring the employer by always shaving off minutes. Inconsistent or biased rounding that denies pay for earned time, especially overtime, is considered wage theft and can lead to significant legal penalties, even if the practice seems minor. 

Can you be fired for clocking in early?

Yes, you can get fired for clocking in early if it violates company policy or results in unauthorized overtime, even if it is unintentional.

What are the longest hours you can legally work?

Legally, in the U.S., there's no federal limit on work hours for adults (16+), but the Fair Labor Standards Act (FLSA) requires overtime pay (1.5x) for over 40 hours a week, while some states and specific industries (like transportation) have stricter rules for rest, shift length, and mandatory days off, so check your state laws and union contracts for precise limits on consecutive hours or required rest. 

What is OT for $20 an hour?

For someone earning $20 an hour, standard overtime (time-and-a-half) is $30 per hour ($20 x 1.5) for hours worked over 40 in a week, calculated as your base pay plus 50% extra for those overtime hours, with state laws sometimes requiring daily overtime or higher rates for weekends/holidays. 

Is working 80 hours a week illegal?

No, working 80 hours a week isn't inherently illegal in the U.S. for most adults, but federal law (FLSA) requires overtime pay (1.5x regular rate) for non-exempt employees for hours over 40 in a workweek, meaning you must be paid significantly more for those extra hours; exceptions exist for certain exempt roles (like some managers/professionals) or specific industries (like healthcare's "8 and 80" rule), and state laws or contracts can add more rules, but generally, long hours are allowed if compensated properly. 

What is OSHA's 3 most cited violation?

The top 3 OSHA citations consistently involve Fall Protection – General Requirements, Hazard Communication, and Ladders, though the exact order shifts slightly by year, with Fall Protection usually leading, followed by issues with chemical safety and ladder setup/use across both construction and general industry. For Fiscal Year (FY) 2024, the top citations were Fall Protection (General Requirements), Hazard Communication, and Ladders, with similar patterns seen in previous years.