Hybrid work across the river: allocating Oregon workdays

The basic method

Wages are apportioned to Oregon using the ratio of days worked in Oregon to total days worked. Not calendar days — working days. Weekends, holidays and unworked leave generally come out of the denominator, which usually raises the Oregon fraction rather than lowering it. Anyone told to divide by 365 has been given the wrong method.

Partial days are the awkward part

A morning at the Portland office and an afternoon at home in Vancouver is one day worked in two places. There is no universally applied rule, and treatments vary — some allocate by hours, some count the day where the majority of work occurred, some treat any Oregon presence as an Oregon day. Choose a defensible method, apply it consistently across the whole year, and write down what you chose. Consistency and documentation matter more than which reasonable method you pick.

Records that hold up

1. 1A contemporaneous calendar. Kept as the year happens. This is the single most valuable record you can have.
2. 2Badge or door-access logs. Employer-generated, dated, and hard to argue with.
3. 3VPN and network logs showing which location you connected from.
4. 4Expense and mileage records for travel days.
5. 5Your employer’s own timekeeping where it captures work location.

The local taxes need their own count

Metro SHS and Multnomah PFA have different geographic boundaries, so one day count does not serve all three taxes. A day at an office in Hillsboro is an Oregon day and a Metro district day, but not a Multnomah County day. A day at an office in downtown Portland is all three. Track the location, not just the state, and the rest can be derived.