PFA wants longer A-League contracts
Seventy players were unemployed on June 1 and the 2014-15 season had 134 players with one year or less remaining on their contracts, according to the PFA.
PFA chief executive Adam Vivian called for change, with the body in negotiations with Football Federation Australia for a new collective bargaining agreement.
"The stability of the league must be a priority for all and player contracting is fundamental to this," he said in a statement.
"The current level of transition, where we have over half the league coming off contract, does little to enhance the attractiveness of the A-League to players of the highest possible quality, with players, like all workers, eager to have high levels of security.
"Sincere efforts must be taken to ensure growth and development opportunities for players and, in turn, for players to enjoy their work and time within the A-League, which is amongst the most unique football leagues in the world.
"Over the course of the A-League we have regularly witnessed clubs utilising short-term contracting, however with the league growing year on year, a strong and economically sound domestic football industry can better reward players with longer term contracts.
"We have consistently seen a positive correlation between longer-term contracting and success, specifically with the Brisbane Roar over the past five seasons."
Vivian said the PFA had tabled "a number of solutions" during CBA negotiations as it looks to address the issue.