Dozens of refuse collectors are set to go on strike in an east London borough.
More than 40 workers will walk out in Havering from October 26-30 in a row over working conditions.
The union says the decision to strike comes after it raised a series of concerns for years with management that have not been addressed, including excessive workloads, fatigue and hot weather working.
According to the union, some loaders suffered heatstroke after working through summer heatwaves without having their hours cut, unlike in other boroughs.
Unite general secretary Sharon Graham said: “Bin workers do a difficult and dirty job which is essential for the local community in Havering.
“They deserve to be treated with respect and FCC can't keep kicking these serious concerns from its workforce down the road. These must be addressed now and our members there have our full backing during this dispute.”
The union has also raised concern over pay.
It says a new starter loader is paid £12.88 an hour, while the equivalent role in neighbouring Redbridge is £15.72.
New drivers in Havering are paid £17.24 compared to £19.89 in Redbridge, according to the union.
Unite regional officer Nick West said: "Our members don't want residents to face disruption to bin collections, but it is the consequence of FCC failing to resolve these problems.
“Residents are already paying for this service through their council tax. They deserve a service that works and workers deserve decent pay and conditions in which to deliver it. FCC can resolve this dispute, but it relies on it taking these problems seriously and working with the union to find a meaningful solution.”
The Standard has contacted Havering Council and FCC Waste Management for comment.