This is what we found on Wikipedia regarding the The Pajama Game:

The Pajama Game is a musical based on the 1953 novel 7½ Cents by Richard Bissell. The book is by George Abbott and Richard Bissell; the music and lyrics are by Richard Adler and Jerry Ross. Dances were staged by Bob Fosse in his choreography debut. The story deals with labor troubles and romance in a pajama factory.

The original Broadway production opened on May 13, 1954, at the St. James Theatre, and ran for 1,063 performances, with a brief stop at the Shubert Theatre at the end of the run. It was revived in 1973, and again in 2006 by The Roundabout Theatre Company. The original production, produced by Frederick Brisson, Robert E. Griffith and Harold S. Prince, won a Tony Award for Best Musical. The 2006 Broadway revival won a Tony Award for Best Revival of a Musical. The musical is a popular choice for community and school group productions.

The original West End production opened at the London Coliseum on October 13, 1955, where it ran for 588 performances.