The song was released through Kidinakorner and Interscope on September 24, 2021, as the third and final single from the their fifth studio album, Mercury – Act 1.
The song is upbeat and synth-pop with lyrics written for Reynolds' wife Aja Volkman designed to be tongue-in-cheek and danceable for them both.
My love for her and all we have endured together.The music video for "Monday" premiered on September 24, 2021 and was directed by Matt Eastin.
[6] The video follows all four band members relaxing, performing, and hanging out in their summer paradise bunker.
The video shows TV broadcasts of global catastrophe scenarios that doom and end the world like wars, meteors, UFO invasions, and earthquakes.