Sacking and warnings over social media misuse in Wales
One council worker in Wales was sacked for misusing social media last year and others warned, the BBC has learned.
The 13 cases of misuse included damaging the reputation of a school and posting inappropriate comments, photos and video.
Wrexham council sacked a worker, while Powys and Swansea reported three cases each.
But 12 Welsh councils recorded no social media misuse.
The figures were obtained by a Freedom of Information request by BBC Wales' Welsh-language website, Cymru Fyw.
The sacking at Wrexham was for posting "inappropriate material" on Facebook at work.
Powys recorded three cases of misuse of Facebook which led to disciplinary procedures, involving posting photos and a video from work and inappropriate comments made elsewhere.
Three people were disciplined at Swansea over inappropriate Twitter comments and misusing Facebook and Google.
In Newport a staff member received a written warning over Facebook comments that damaged the reputation of the school where they worked.
A final written warning was issued at Neath Port Talbot after inappropriate statements on Facebook and Twitter, and a written warning issued at Caerphilly after comments about a colleague.
In Gwynedd, a worker had an oral warning over comments about work on Twitter, while an officer was censured in Blaenau Gwent.
In Ceredigion, disciplinary action was taken after "inappropriate dialogue/comments" on Facebook.
Bridgend said it could not provide the information.
All councils have social media policy which applies to employees "when they are using any type of social media and where use could be linked to their employment or the council".