Players from India and Sri Lanka would be the main targets to join in local events which are marred by an absence of leading home players engaged in international tournaments.
"International cricket encroaches upon our domestic events and in an attempt to make domestic cricket attractive we have decided to invite foreign players into our tournaments," said Pakistan Cricket Board (PCB) chairman Nasim Ashraf.
Former captain Inzamam-ul-Haq last month urged Pakistan to raise the standard of first-class cricket, which produces half-cooked players who struggle at international level.
"Through the central contracts given to the home players they are now bound to play in domestic events and we will make sure they feature in at least 75 percent of these events," said Ashraf.
The PCB chairman warned any player not featuring in the required number of domestic matches would not be eligible for international cricket.
"The fee for playing first-class matches will be raised and the PCB will provide money to the regions to hire cricketers," said Ashraf, who took over in October last year.
The prestigious Quaid-e-Azam Trophy will now be the only first-class tournament participated in by eight private departments and 13 regional teams, Ashraf said.
Previously departments and regions featured in separate tournaments.
The PCB also resisted calls from former greats like Imran Khan and Ramiz Raja, who said the departments should be banned.
"Departments give economic security to the players by employing them and we hope that the steps taken will strengthen our first-class cricket, which is the first step towards getting good results at international level," said Ashraf.
Pakistan flopped in the World Cup held in the Caribbean in March-April this year, bowing out in the first round after defeats from the West Indies and minnows Ireland.