And other addicts of the app are risking trespass charges by wandering on to private property in search of virtual monsters.
Law firm FBC Manby Bowdler said it has been approached for advice by people facing the axe for playing Pokémon Go in office hours.
Amber Bate, an HR expert at the company, warned: “A potential implication for employers is employees becoming so hooked on the craze they can’t stop playing. This may particularly affect home or mobile workers”.
“This type of behaviour will be treated as misconduct”
She added: “It ought to go without saying that this type of behaviour will be treated as misconduct.
“Any suspected incidents of staff playing the game while working should be promptly investigated and appropriate disciplinary action taken.”
Gamers have also been caught wandering on to private land and accidentally breaking trespass laws, said law firm Lodders.
Property lawyer James Spreckley said there had been reports of players coming face-to-face with irate farmers.
He added: “Not only could players be injured by livestock or machinery, they could also face a claim for trespass and even criminal charges.”
Meanwhile, a West Midlands council has been forced to block a road to try to stop Pokémon players causing parking chaos around ancient ruins.
Bosses at Dudley Council have been swamped with complaints from residents about loud music and damage to the Priory Ruins.
Bollards have now been placed on the road during the evening, along with a large red “road closed” sign, to stop gamers parking on double yellow lines.