Is the seventh-day rest rule counted over a rolling seven days?

Two things about this rule are widely believed and both are wrong. The first is that any seven consecutive days of work is a violation. The second is that giving somebody one short shift during a busy week buys an exemption. The California Supreme Court closed both readings in the same 2017 opinion.

On the counting question the Court was direct: a day of rest is guaranteed for each workweek, and periods of more than six consecutive days of work that stretch across more than one workweek are not per se prohibited. An employee who rests on the Monday of one workweek and the Sunday of the next has worked twelve days in a row and been given every day of rest the statute requires. The workweek is a fixed, recurring seven-day period — it does not slide forward to follow the schedule.

The § 556 exemption is where the expensive mistake lives. The section lifts the requirement where total hours do not exceed 30 in the week or six "in any one day thereof", and that phrasing reads, to a manager under pressure, as "one short day and we are fine". It is not. The exemption reaches only employees who never exceed six hours on any day of the workweek. A single seven-hour day puts the whole week back under the rule.

The third holding is the one that decides most disputes. An employer causes an employee to go without rest when it induces the employee to forgo rest they are entitled to — but it need not stop a fully informed employee who independently chooses to work. So the question in a real case is rarely "did they work seven days"; it is what was said when the seventh day was scheduled, and whether the employee knew they could decline.

Note that this is a separate obligation from seventh-day premium pay. Paying time and a half on the seventh consecutive day of a workweek satisfies the wage rule and does nothing for this one. They are different sections and can be violated independently.