The Scottish Premier League panel will rule early next month on the complaint made by Hearts players about delayed wage payments.
The SPL board discussed the issue on Monday at a meeting scheduled before the complaint was received on Friday evening.
A statement read: "The SPL board today considered the complaint from PFA Scotland on behalf of several PFA Scotland members. An SPL sub-committee will adjudicate on the complaint at a hearing on January 4. No further comment will be issued until after the hearing."
Hearts' first-team players suffered major delays in receiving wages for the last two months and the club are late in meeting this month's schedule.
After a 19-day delay in the October payments, the players waited almost a full month for the vast majority of their November wages.
They were eventually paid on Thursday, just after they signed a letter of permission allowing PFA Scotland to represent them.
The union, who had previously failed to persuade the Scottish football authorities to intervene, submitted a complaint to the SPL after the December wages were not received on the scheduled day. PFA Scotland said the move had the full backing of the dressing room.