The workers took ill after they ate food at the canteen during their shift duty last night and complained of nausea and vomitting.
They were later admitted to a private hospital where their condition was stated to be stable.
One of the workers reportedly found a dead house lizard in a food plate, police added.
The food samples from the canteen have been sent for chemical analysis at the FDA laboratory.
Police have arrested the canteen contractor and registered an offence under sections 337 and 330 of IPC.
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