This　study　examines　the　role　of　leisure　participation　on　work　passion,　a　critical　yet　understudied　aspect　of　human　resource　management.　Moving　beyond　traditional　conflict-focused　analyses　of　work-life　balance,　it　delves　into　leisure’s　role　in　fostering　work　passion　among　knowledge　workers,　considering　the　cross-domain　resource　gain.　The　research　also　considers　the　mediating　effect　of　recovery　experiences　and　the　moderating　role　of　organizational　attachment.　Data　from　a　survey　of　586　employees　reveal　an　inverted　U-shaped　correlation　between　leisure　participation　and　work　passion.　The　extent　and　nature　of　leisure　activities　are　vital　to　stimulating　work　passion.　Recovery　experiences　partially　mediate　this　relationship,　indicating　that　leisure　activities　helping　individuals　rejuvenate　and　build　positive　resources　can　effectively　enhance　work　passion.　Insecure　organizational　attachment　moderates　this　relationship,　with　external　conditions　and　employees’　perceptions　of　their　organization　influencing　the　transformation　of　leisure-derived　positivity　into　work　passion.　These　findings　offer　fresh　insights　on　the　origins　of　work　passion　and　practical　strategies　for　addressing　the　prevalent　issue　of　diminished　work　passion.　©　2024　selection　and　editorial　matter,　Huimei　Liu;　individual　chapters,　the　contributors.