Home-working guides recommend a dedicated workspace, clear boundaries and a door that closes, none of which have ever been explained to a cat.
Meet it halfway. Place a spare keyboard beside yours, warm it with a hot-water bottle and gesture towards it encouragingly. Field notes: over 30 working days the cat sat on the spare for 11 minutes and on yours for 212 hours. You now type on the spare, which is not plugged into anything, and the cat has answered 40 emails, most of them better received than yours.