“Rules of conduct at dance evenings: workers must come to dance evenings in light clothing and shoes. Dancing in working sportswear is prohibited. dancing in a distorted form is prohibited. the dancer must perform the dance correctly, clearly and equally well with both the right and left foot. a woman has the right to politely express displeasure about a man’s failure to comply with the required three centimeters and demand an explanation in a polite manner at a distance. smoking and laughing should be in specially designated areas.”