Employee Expense Reimbursement Laws in Washington

Federal law does not establish a general mandatory reimbursement requirement for business expenses. The Fair Labor Standards Act (FLSA), 29 U.S.C. § 201 et seq., permits employers to deduct certain expenses from employee pay only if the deduction does not reduce wages below the applicable minimum wage for all hours worked. However, this is a narrow exception and does not create an affirmative reimbursement obligation.

The Internal Revenue Code allows employers to operate accountable plans for employee business expenses, and when structured properly, employees can exclude reimbursements from taxable income. However, federal employment law does not mandate reimbursement—it simply permits tax-advantaged treatment when reimbursement occurs. The EEOC and Department of Labor have limited jurisdiction over routine business expense reimbursement absent a connection to discrimination, wage-and-hour violations, or other protected categories. Most federal guidance focuses on ensuring that reimbursement deductions do not violate minimum wage or overtime requirements rather than mandating reimbursement itself.

Unlike many states, the federal baseline does not recognize employee-incurred business expenses as automatically compensable. States like California, New York, and Washington have stepped significantly beyond the federal floor by explicitly requiring reimbursement as a matter of wage law.

Washington state law imposes one of the strongest mandatory reimbursement requirements in the nation. Under Washington Revised Code § 49.48.010, employers must pay employees all wages owed, including reimbursement for all necessary expenses incurred in the discharge of their duties. Washington Revised Code § 49.52.050 further prohibits employers from making deductions for ordinary business expenses, tools, or supplies required to perform the job. This means an employee cannot be required to absorb the cost of materials, equipment, or supplies necessary for work as a condition of employment.

Washington's requirement is substantially stronger than federal law. While the FLSA permits deductions only if they do not reduce pay below minimum wage, Washington affirmatively requires reimbursement of necessary expenses without regard to whether the deduction would technically fall below minimum wage. Washington applies this requirement to employers of all sizes—there is no employer size threshold. The state covers private employers, public agencies, nonprofits, and other entities with employees.

Washington recognizes a broad category of reimbursable expenses: mileage and vehicle expenses when employees use personal vehicles for work, supplies and materials necessary to perform the job, tools required for work, phone and internet expenses if job-related, professional licensing and continuing education directly required by the employer, uniforms and protective equipment, and travel expenses including lodging and meals when required by the employer. The state also requires reimbursement for expenses incurred to comply with employer-imposed requirements, such as background checks or drug testing when the employer mandates the service.

Unlike federal law, Washington does not permit a "safe harbor" deduction for business expenses if the deduction would otherwise reduce pay. Instead, Washington law establishes that reimbursement is a separate component of wages owed. This means employees are entitled to both their regular wages and full reimbursement. Washington's Department of Labor & Industries has interpreted this statute to mean that employers cannot shift ordinary business expenses to employees. The state's wage theft statutes further classify failure to reimburse as potential wage theft, which can trigger enhanced penalties and attorney's fees.

Washington applies expense reimbursement requirements to all employers regardless of size—no employee threshold exists.

Reimbursement must occur within a reasonable time, typically interpreted as the next regular pay period (RCW § 49.48.010).

No dollar cap or minimum threshold applies; all necessary expenses must be reimbursed.

Statute of limitations: Employees have three years to pursue wage claims under Washington law (RCW § 49.52.140).

Wage theft penalties: Employers who fail to reimburse face liability for unpaid expenses plus interest and attorney's fees.

Washington's reimbursement requirement has narrow, well-defined exceptions. Personal expenses—costs unrelated to the job or that benefit the employee personally—are not reimbursable. For example, an employee's personal health insurance premium or a personal cell phone plan used only for personal communication is not reimbursable, even if the employee occasionally uses it for work.

Expenses the employee chooses to incur without employer authorization may fall outside the reimbursement requirement if the employer has a clear, established policy prohibiting such expenses. However, this exception is narrow: if the employer imposes a job requirement that necessitates the expense (such as a uniform dress code or specific software), the employer cannot avoid reimbursement by claiming the employee chose to comply. The employer's implicit mandate creates the obligation.

Minor expenses sometimes create ambiguity. Washington does not establish a "de minimis" exception (a formal trivial amount threshold). However, courts have occasionally recognized that truly negligible amounts—such as a single pen purchased by an employee—may not trigger reimbursement obligations. This is not a formalized exception and does not excuse systematic failure to reimburse recurring small expenses.

Employees who fail to follow documented, reasonable expense procedures or who incur expenses explicitly prohibited by the employer may have reduced reimbursement claims. However, the employer's policy must be communicated in advance and must be reasonable. For example, an employer can require employees to use a corporate credit card or to submit expense reports within a certain timeframe. The employer cannot, however, use a procedural failure as a pretext to deny reimbursement entirely.

Union/collective bargaining agreements may establish reimbursement procedures different from the statutory default, but they cannot eliminate the employer's obligation to reimburse or reduce reimbursement below what the statute requires. Any reimbursement dispute in a unionized workplace is subject to the grievance process established by the collective bargaining agreement but remains subject to minimum statutory protections.

At-will employment status does not modify reimbursement requirements. An at-will employee is entitled to reimbursement just as a contract employee is. Reimbursement is a statutory wage component, not discretionary.

Step 1: Document All Expenses. Keep detailed records of every work-related expense requiring reimbursement. This includes itemized receipts (save originals, photograph them, or email them to yourself), credit card or bank statements showing the charge, the date of the expense, the business purpose (what work activity required the expense), and the category (mileage, supplies, travel, tools, etc.). For mileage, maintain a mileage log with dates, destinations, business purpose, and miles driven—contemporaneous logs are far more credible than reconstructed records. If receipts are unavailable, document the expense with emails, calendar entries, or witness statements. Photographs of receipts are acceptable but originals are superior. Save all documentation for at least three years given Washington's three-year statute of limitations.

Step 2: Initiate Internal Complaint and Request Reimbursement. Contact your supervisor, human resources department, or payroll in writing (email is appropriate and creates a record). State clearly that you are requesting reimbursement for work expenses, list the expenses with dates and amounts, and reference Washington Revised Code § 49.48.010 if appropriate. Request reimbursement within a specific timeframe, such as 14 days. Keep a copy of your request and any response. Many reimbursement disputes are resolved at this stage when the employer realizes the employee knows their rights. If the employer denies reimbursement or fails to respond, proceed to Step 3. Do not simply drop the matter; internal documentation strengthens any future claim.

Step 3: File a Complaint with Washington Department of Labor & Industries. Visit the Washington Department of Labor & Industries website at lni.wa.gov or call 1-800-4-USWAGE (1-800-487-9243). You can file a wage complaint online, by phone, or in person at a regional office. Provide: your name and contact information; your employer's name, address, and phone number; the dates of employment; dates of the unpaid expenses; the amounts claimed; a detailed description of the expenses and business purpose; and copies of all documentation (receipts, mileage logs, internal requests). The department will not pursue complaints if the employee has already filed a lawsuit, so choose one path initially (though you can escalate to civil litigation later if necessary). Department investigation typically takes 4–8 weeks, though complex cases may take longer.

Step 4: Department Investigation and Resolution. Once your complaint is filed, the Department of Labor & Industries will contact the employer and request documentation of the expense reimbursement policy and records of payments made to you. The department investigates whether the employer violated wage and hour laws. The employer will be given an opportunity to respond. The investigation includes review of company policies, pay records, and communications about the disputed expenses. You may be asked to provide additional documentation or clarification. The department will issue a finding: if violations are found, the employer is typically ordered to reimburse the unpaid expenses, plus interest (calculated at the rate of 8% per annum), and may face penalties of up to $1,000 per violation. The investigation typically concludes with a written determination. If the employer does not comply with the determination, the department can refer the matter for enforcement action.

Step 5: Consult an Employment Attorney and Consider Civil Litigation. If the Department of Labor & Industries finds violations or if you wish to pursue a stronger remedy, consult a Washington employment law attorney. Many employment attorneys offer free initial consultations. You are entitled to recover unpaid reimbursement, interest, penalties, and attorney's fees under RCW § 49.52.140 if you prevail. An attorney can file a civil action in state court for wage recovery, which allows you to bypass the administrative process if you prefer. Civil litigation typically results in larger awards because it includes attorney's fees and penalties. An attorney can also advise whether claims against other employees (if applicable) strengthen your case or whether the employer's pattern of non-reimbursement creates a class action opportunity. Statute of limitations for civil wage claims is three years (RCW § 49.52.140), so timely action is important.