Hooker Ed Shervington, prop George Porter and back row duo Sam Betty and Richard de Carpentier have all re-signed with Worcester.
The four forwards join Jonny Arr, Chris Pennell and Josh Drauniniu who have also recently pledged their playing futures to Warriors.
All-action front row Shervington, who has been capped by Wales at Under-21 level, joined Warriors in 2010 from Ospreys. He has become an established member of the senior set-up making 55 appearances in all competitions, scoring four tries.
"Ed has really progressed since he has been at Sixways and proven himself to be a genuine first team hooker in the Aviva Premiership," said Worcester head coach Richard Hill.
"He works so hard you have to drag him out of the gym as he would be in there all day and all night. He compliments Aleki Lutui with his style of game and is very strong in the set piece so we are excited that he has committed his future to us."
"Sam has made the transition up from the RFU Championship, which is not an easy thing to do for a forward, and been fantastic for us.
"He is regarded as one of the best defensive back row forwards in the Aviva Premiership and is a hard man who will do anything for this club. He is also developing his attacking game which is very encouraging.
"We see George as an athletic and mobile loosehead who suits the fast game we want to play.
"He has a big future in the game and has been unlucky with a shoulder injury this season that has restricted the amount of time we have seen him in action. But we have seen more than enough to convince us that he has a bright future at Warriors.
"Richard's attitude is excellent. He is really dedicated, hard-working and wants to improve himself all the time.
"He has been unfortunate that he has had to bide his time for opportunities, but he made a very impressive display against London Irish at the weekend to show the talent we know he has. He is one of the younger members of the squad and a very exciting English talent for us to work with."