労働者の日 Rōdōsha no hi 

Labor Day
 
Example 1
Labor Day is a day to honor the hard work and contributions of working people.
労働者の日は、働く人々の勤勉さと貢献を称える日です。 Rōdōsha no hi wa, hataraku hitobito no kinbensa to kōken o tataeru hi desu.
Example 2
It's common to enjoy barbecues or picnics with family and friends.
家族や友人と一緒にバーベキューやピクニックを楽しむことが一般的です。 Kazoku ya yūjin to issho ni bābekyū ya pikunikku o tanoshimu koto ga ippan-tekidesu.