How one happens
Most forced calls aren't planned. Day 8 was scheduled to wrap at 7:00P, but a stunt took extra takes and the lead, Maya, was dismissed at 9:10P. Tomorrow's call sheet already went out with Maya in makeup at 7:00A. Under the 12-hour SAG-AFTRA theatrical rest period in the studio zone, her earliest call is 9:10A. A 7:00A call invades her rest by 2 hours 10 minutes.
The 2nd AD catches this while doing times at wrap and has three options: re-order tomorrow so Maya's first scene is later, push the whole call (which affects crew turnaround and daylight), or keep the call and accept the penalty. The UPM decides.
What it costs
SAG-AFTRA's theatrical summary lists the forced call penalty as the daily rate or $900, whichever is less, per violation for day performers, and one day's pay or $950, whichever is less, for weekly performers (SAG-AFTRA rest periods). If Maya is a weekly performer earning more than $950 a day, the penalty is $950. If a day performer's rate is $800, their penalty is $800.
Crew agreements handle this differently. Many IATSE agreements pay invaded hours at a penalty rate, and the numbers depend on the local and contract. IATSE Local 80 lists a standard 10-hour turnaround, with shorter minimums for distant hires and studio gang work (Local 80 FAQ). Payroll applies the rules from time cards.
Where it shows up in the paperwork
The Exhibit G records dismissal and report times for each performer, which is where a forced call becomes visible. The daily production report notes it, and the hot cost report carries the dollar amount. Repeat forced calls also show up on the weekly cost report, where the line producer will ask about them.
Avoiding them
Before the call sheet is published, the 2nd AD should check each cast member's projected dismissal against their next call, with some margin for the day running long. The turnaround calculator helps when cast have staggered release times. Avoid scheduling an actor's last scene late in the day when their first scene tomorrow is at call; flipping the order on one of the two days often removes the risk. For a broader look at rest rules across unions, see turnaround rules compared and the turnaround entry.