People visiting South Barrule plantation are being urged to stay out of restricted areas.
The government's warning follows an incident this week where someone entered a high-risk zone to film heavy machinery doing harvesting work.
There were also cases of the public approaching machinery during works on dirt roads.
In a social media post, the government is stressing that even briefly stepping into prohibited spaces poses a risk of serious injury or death.
Tree harvesting operations at the southern plantation are expected to continue for several months.
New laws for young workers come into force today
Manx Care extends mental health service to more surgeries
Bus Vannin confirms normal services to run over Easter
Steam Packet's new Northern Irish route launches today
Creamery reassures milk buyers over price rise
April fool - did you get caught this morning?!
Tea room shuts its doors for good
Milk up more than 5p a pint from today