Blizzards across the east coast of Scotland forced ISS Facility Services Landscaping to draw staff from the western regions to grit and clear snow around the clock.
Ian Campbell, ISS operations director in Scotland, said 25 staff in and around Fife were stranded and unable to drive to work. Instead, seconded crews were clearing ice and snow in car parks for clients including Sky TV, the Ministry of Defence and drinks firm Diageo.
"I have guys who have been on the go since yesterday at 3pm," said Campbell. "I have others sleeping in vans before the start of the next shift. Every JCB excavator in Scotland is tied up and our clients are looking to us for help. Fortunately, we are not short of grit."
He added: "Frost is easy to clear but if it continues to snow we could have problems. Mobilising staff can be really difficult and you can't be complacent when it snows."