Light Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 2.5
Training / Qualification; Situational Awareness; Communication Breakdown
ATC Issue All Types; Conflict Airborne Conflict
Air Traffic Control Issued New Clearance; Air Traffic Control Separated Traffic
Procedure; Airspace Structure
Aircraft X departed climbing to 3000 feet. He checked in stating that he was looking for traffic. By the time we got Aircraft X the traffic was 12-1 o'clock; 2 miles at 2500 feet. We immediately turned Aircraft X to the south for the traffic. The Tower never called us to coordinate a different heading; altitude for the aircraft they just departed in the upwind.Sadly; this has become a procedure/habit at this Tower. I've had this happen multiple times and never [reported] before because even though it upset me that this Tower does nothing to ensure separation; management has stated that this is how it's always been. I worked at a tower and we never allowed a jet to climb into VFR traffic we just departed. Now granted; this Tower doesn't have a lot of room to play with. They depart aircraft and don't ensure separation with VFR they are talking to. Most of the worst situations I've seen have been with jet departures. I don't know if they have just become complacent; or don't consider it their responsibility or were taught to not care. I truthfully have yelled at them a few times because they have jets climbing into VFR arrivals/departures and give me the excuse that 'I issued the traffic'.We are working on this issue; however; I'm going to start [reporting] this whenever I see it.Tower needs to understand that we are a team. They can call us and ask for a different heading or altitude for their departure. I feel like we are always trying to help the towers when they need it; I don't understand how they think departing a jet behind a [small aircraft] which is climbing through the slower aircrafts altitude is safe. They switch the jet to Departure control and only issue the traffic; even if the Tower were to claim that the jet had the traffic in sight; they come to use straight out climbing. You're not giving the pilot anyway to avoid the traffic even if they see each other. This is extremely unsafe and is putting the pilot and us at risk.
A Control Tower departed a jet behind a slower moving VFR prop aircraft on the same route without taking action to ensure separation. The Tower issued traffic to the jet and switched it to Departure Control frequency.