*Several **noncooperating** coworkers caused the project to be delivered late.*


>Adjective	 **noncooperating** ‎(not comparable)    
>Etymology: non- +‎ cooperating.   
>— [Wictionary][1]


Or rephrasing:  
  *Several coworkers, **who did not cooperate well**, caused the project to be delivered late.*

  [1]: https://en.m.wiktionary.org/wiki/noncooperating