Characters from the anime adaptation of Kenji Miyazawa's (宮沢賢治) short story - The Cat Office (猫の事務所)
I took a little li-purr-ty and gave them mew uniforms (OK I'll stop :3). They're saluting their boss before a hard day's work.
Those wrist braces are shorter versions of wrist stockings that keep ink off their clean shirts ^^

If you ever do get a chance to watch this little animation, do so.