The referees' union Prospect has pledged its "full support" to Mark Clattenburg after Chelsea accused him of using "inappropriate language" towards John Obi Mikel and Juan Mata.
Clattenburg now has to wait on Football Association investigation into allegations he made comments towards Mikel and Mata.
Such comments are understood to have been interpreted as racist, during the Blues' Premier League defeat to Manchester United on Sunday.
The 37-year-old from Gosforth was given the full backing of Prospect, who said in a statement: "Prospect is committed to helping to eradicate racism in football and in society generally.
"In the context of that commitment, Prospect is offering full support to Mark Clattenburg in relation to the allegations made against him.
"It is now important that the allegations are fully investigated through the proper process as quickly as possible.
"We will be making no further comment at this stage."