Thousands of ride-hailing and delivery workers in the U.S. and the U.K. went on strike on Valentine’s Day, calling for fair compensation and other changes to their working conditions.

In the U.S., Uber and Lyft drivers planned daylong strikes in Chicago; Philadelphia; Pittsburgh; Miami; Orlando and Tampa, Florida; Hartford, Connecticut; Newark, New Jersey; Austin, Texas; and Providence, Rhode Island. Drivers were also holding midday demonstrations at airports in those cities, according to Justice for App Workers, the group organizing the effort.

Meanwhile, U.K. delivery drivers for Uber Eats, Deliveroo, Just Eat and Stuart said they would turn off their apps and refuse deliveries between 5 and 10 p.m. The group Delivery Job U.K., which called for the walkout, said on Instagram that the strike was “a crucial opportunity to be seen and heard by society.”