Today, the sequence definition in ESS determines whether two shifts are part of the same sequence by looking at the time between the start of the previous shift and the start of the next shift. For datasets where shifts have varying lengths, this makes it impossible to accurately express rules that should be based on how much rest an employee actually gets between shifts.

The request is to also support defining sequences based on the time between the end of the previous shift and the start of the next shift. This would make sequence-based rules (like minimum rest or maximum consecutive shifts) accurate regardless of shift length variation within a dataset.