CYBER snoopers plan to secretly trawl through thousands of staff emails for non-PC jokes.
Any workers caught saving or forwarding the gags face the sack from Kirklees Council.
Concerned council computer bosses have now put forward a new email policy for local authority staff.
The council is currently investigating more than 50 cases of email misuse.
Under the new proposals anyone who pokes fun at a colleague or makes fun of politics or religion would be given the boot.
Staff who forward "ageist" emails face a written warning.
And anyone sending "cute animal pictures" or "light- hearted material" will be hauled over the coals by bosses for either a written or verbal warning.
The crackdown on computer communications comes just months after the council was dragged into a porn email scandal.
Workers from the council's Civic Centre and Kirklees Neighbourhood Housing's Perseverance House were quizzed about rude images being sent and received.
Under the new investigation, council IT workers will be asked to check staff members' email accounts.
They will be able to secretly download and print copies of emails.
They will also be tracing other people who have viewed the email.
A report into the new plan reads: "Where the activity is undertaken by a group, it may be best to gather all the information before making any members of this group aware of the investigations."
The council's policy will also cover sexy pictures, racist and homophobic emails as well as emails showing violence.
The proposals will be put before policy watchdog, the Overview and Scrutiny Panel for Corporate Affairs, on Thursday.
Panel member Clr Jim Dodds said he was worried about the proposals.
He added: "We are getting a bit too PC here.
"You do have to be careful what you say in an email and shouldn't say anything you wouldn't say to the person directly.
"But some of this sounds suspiciously like curtailing free speech."
Clr Dodds added: "In some cases the reading of emails is acceptable but this should be a last resort not a first option - we are not a nanny state just yet."