May I set reimbursement rules by company policy?

Yes. California Labor Code Section 2802 requires reimbursement, and employers may set reasonable company policies outlining how employees request reimbursement and what documentation is needed.

Employers may establish policies for providing tools or reimbursing expenses, including procedures and documentation requirements. Employers are responsible for providing or reimbursing necessary tools (e.g., phones, laptops, internet).

Employees who use personal vehicles for work must be reimbursed for mileage at a reasonable rate that covers related costs. Employers may require proof of minimum insurance but