[rdtsc]

The answer I heard is because part of the initial salary negotiations the employer/employee should have already factored that in.

However, it could make sense that if they initially worked from home, then had to start commuting, the company should pay for gas, car maintenance, tolls, public transportation, etc.

Then, the same goes in reverse, if the worker agreed to the salary working from the office, when forced to work from home, they could make a case of the company having to pay for monitors, a desk, electricity, a faster internet, etc.