Warehouse staff at brewing giant Carlsberg have staged a second day of walkouts in protest at a company decision to limit beer drinking at work to lunch breaks.
The strike in Denmark follows a move last week to change the rules for on-site drinking, the world's fourth-largest brewer said.
Carlsberg spokesman Jens Bekke told Sky News: "We think times have changed and we need an alcohol policy that is accepted by society - 93% of Danish companies have an alcohol policy.
"There has been free beer, water and soft drinks everywhere. (On Wednesday), beers were removed from all refrigerators. The only place you can get a beer in future is in the canteen, at lunch."
Mr Bekke said Carlsberg drivers claim a "very old right" to have up to three beers per day outside lunch hours.
The warehouse workers say they share that entitlement - a claim the brewer disputes.
"Because of that, the warehouse staff went on strike yesterday, with other staff striking in sympathy," Mr Bekke said.
As many as 800 workers walked out on Wednesday, with 250 still on strike on Thursday.
Mr Bekke said the Confederation of Danish Industry and trade union 3F had agreed the strike was illegal and would impose fines on workers.
Mr Bekke said although the walkout would halt shipments from Copenhagen for the day and cause delays in the rest of the country, he expected the financial effect of the strike to be minor.
He added that Carlsberg's trucks have alcohol locks so drivers would not be able to drink too much and drive.