Vacation

In California, because paid vacation is a form of wages, it is earned as labor is performed. An employer’s vacation plan may provide for the earning of vacation benefits on a day-by-day, by the week, by the pay period, or some other period basis. For example, an employer’s policy may provide that an employee will earn a proportionate share of …

https://www.dir.ca.gov/dlse/FAQ_Vacation.html