Investigations are being carried out following two separate deaths at businesses.
A spokeswoman for Police Scotland said: “Police and the Health and Safety Executive (HSE) are making inquiries following the death of a male in his 30s in the Nigg area at around 2.30pm on Monday.
“Inquiries are at an early stage and are ongoing to establish the circumstances.
“As with all sudden deaths, a report will be submitted to the Procurator Fiscal.”
A Scottish Ambulance Service spokesman said: “We can confirm an ambulance crew was called to an incident.
“No one was taken to hospital.”
A Scottish Fire and Rescue Service spokesman said: “We can confirm we were called to an incident at EIS Waste.”
A HSE spokeswoman said the organisation attended the site yesterday and is investigating alongside Police Scotland.
Emergency crews were called to Thistle Seafoods, Harbour Street, Boddam, near Peterhead yesterday.
A police spokeswoman said: “Police were made aware of the death of a man at about 2.20pm on Monday in the harbour area of Boddam.
“The death is being treated as unexplained and inquiries are at an early stage to establish the circumstances.
“The Health and Safety Executive has been contacted.”
An HSE spokeswoman confirmed the authority was carrying out initial inquiries.
A Scottish Ambulance Service spokesman confirmed they were called to the scene and an air ambulance was in attendance.
He added: “No one was transported to hospital.”
Neither Thistle Seafoods or EIS Waste Services wished to comment.