When UP2020 was rolled out, one of the stated goals was a 30% overall reduction in the UP workforce. Using the 2018 starting workforce number of 41,500, this equates to a final workforce of 29,050 employees. That is a net loss of 12,450 jobs company-wide, meaning that UP is about 1/3 of the way to their reduction goal.
It is safe to say that the bleeding has only just begun, because the only way for UP to reach their stated goal on their stated timeline is to layoff workers in larger numbers and more frequently. Their current strategy of making many small cuts isn't going to deliver the numbers that they want when they want them.
Everyone working at UP who isn't sitting in the C-suite should begin actively looking for another job if they aren't already, because if they aren't sitting there, they have (at best) a 2/3 chance of keeping their current job.