The fast food giant announced the kind gesture as a way to 'thank and reward' people who are working around the clock during the pandemic.
In a statement McDonald's said: "We want to use our UK and Ireland footprint to thank, reward and support the health and care workers doing an incredible job in difficult and unprecedented times.
"This offer is a token of our appreciation for the tireless work that these professionals are carrying out in the communities in which we operate.
"From today we are offering free drinks for those workers in our restaurants and Drive Thrus, on sight of their work pass."
The offer is available for staff from the NHS, council and emergency services - to claim your free drink you'll need your ID.
The offer applies to all drinks, including hot drinks.
A spokesperson said the offer would be 'continually reviewed' and will be available as long as UK Government guidelines allows restaurants to remain open.
In light of guidelines around social distancing, McDonald's announced it would be closing seating areas and become takeaway, Drive-Thru and McDelivery only.
The change came into force at 5am today (Wednesday 18 March) and the company stressed it will 'remain open for as long as it is safe to do so'.
Speaking about the news, McDonald's UK and Ireland boss Paul Pomroy said: "The wellbeing of our employees, customers and suppliers remains of the greatest importance to us and these changes are designed with you all in mind.
"We have not taken this decision lightly and will continue to review this over the coming days."
The company has also made the decision to delay this year's Monopoly promotion.
A statement read: "This year's prizes include a number of luxury holidays, European city breaks and cruises which will have all been impacted by current and ongoing restrictions on international travel.
"Following conversations with our suppliers and prize partners, we feel it is appropriate to delay the promotion until later this year.
"I apologise for any disappointment caused by this update and I look forward to Monopoly returning to our restaurants as soon as possible."
Featured Image Credit: PA