Complex sentence: Most workers have already resigned from their jobs and filed for their exit clearances but the company couldn't provide plane ticket, End of service benefits and most of all the salary, hence their dire situation as stranded workers.
Split into simpler sentences: Most workers have already resigned from their jobs and filed for their exit clearances. However, the company could not provide airplane tickets, end of service benefits, and most importantly salaries which have resulted in their dire situation as stranded workers.