Under the arrangement, Deliveroo, Just Eat, and Uber Eats will gain access to data to help identify and suspend delivery riders found to be sharing accounts with migrants who have no legal right to work in the country.
Riders can access UK-registered GPs via phone or video through Teladoc Health, ensuring they have medical advice when needed.
The union, which has deals with delivery giants Deliveroo, Uber Eats and Uber, said clarity is required for sensible negotiations over pay and conditions.
This commitment follows productive discussions with Michael Tomlinson, the Minister for Countering Illegal Migration, and Kevin Hollinrake, the Minister for Business and Trade, at the Home Office.
Deliveroo introduces a partnership with Bubble to offer 1,000 riders access to 15 hours of free, flexible childcare.