Bosses at a north-east engineering firm claim they have been the subject of bomb scares after declaring support for the No campaign.
Score Group plc, which has offices in Peterhead and Fraserburgh, said there had been three threats made against it in recent months.
In June, the Press and Journal revealed staff at the firm’s Peterhead base had received a suspicious package in the mail, which turned out to be a hoax.
The company also said four “No Thanks” signs outside its premises had been stolen or vandalised on six occasions since they were put up at the start of this month.
A spokesman said CCTV images had been handed to police investigating the complaints in both Peterhead and Fraserburgh.
He said: “As a company we have always been quite open on what our views are on the referendum.
“The level of abuse we have taken on social media alone is absolutely disgusting. It has just become personal.
“We’re not asking for these attacks, we just feel as a company that we are on the side of the No vote, and you should be able to state your opinion in a democracy.”
The spokesman said he was thankful that no employees had felt pressured into leaving the company so far.
“I’m sure the staff don’t like the fact that they are in a work place where they have to deal with suspicious packages,” he added.
“I think the majority of staff look at the bigger picture and understand what’s going on.”
Elsewhere, a spate of referendum-related vandalism incidents have taken place in Aberdeen over the past week.
Two banners promoting the Yes campaign in the Bridge of Don area were vandalised.
The signs – at a property on The Parkway which backs onto Carnoustie Gardens – were targeted on Monday.
A flag was torched and a placard was daubed with graffiti and cracked.
Local Yes campaigners claim about nine other banners have been stolen across the area.
A “No Thanks” sign at Middleton Farm was also dismantled overnight between Saturday and Sunday.