Need a second opinion, would appreciate. Can a T-S PTer with a bid for Saturday carparking (backup during the week) be forced off the job by a M-F FT 22.3 being asked to come in. Was told before by BA that since he is M-F that he can't come in and bump me on Saturdays. Management wants to use me inside and keep this other employee parking cars for peak. The excuse is that because it is December, management can put me wherever they need me and don't need to honor the bid job and that we are all forced for M-ST. Steward says that because we are all forced M-Sat, they must honor his seniority and let him car park before me with the regular scheduled bid on sat. Western Supplement Article 6.4 makes exception only for NEW or VACANT PT preferred jobs can be filled at management discretion for December. The job is a different nature and already mine (past practice established) and there is no new opening available. I don't think that car parking would be considered a preferred job like preload,unload, sorting, etc. Western Supplement Article 20.3 defines work week for PT as M-F or T-S, I am already T-S Southwest Package Rider Section 10.3 Workday-workweek for all other Full-Time employees. No employee with seniority date prior to August 1, 2018 will be forced to a T-S work week unless mutually agreed to or bid into. There fore, Saturday is not contractually forced and is still extra work and seniority cannot be used to bump PTer with regular bid in Car parking for Saturday. I couldn't find language for a PT T-S be forced to a M-F schedule and Saturday becomes extra work all of a sudden either. Nor could I find language that the company can force 6 day workweeks for peak. Thanks for your help and opinions. God bless.