Can't think of any.

My most regrettable work experience was basically a complete waste of time. They invited me to an interview without even updating the company address; only after I arrived did they tell me it was not the correct address. The cluttered desk during the interview also left a poor impression. They did not even properly review my résumé. The position discussed at the interview did not match the position they actually needed. I interviewed for an execution role, but the supervisor said that, given my educational background, I was better suited to writing proposals. I clearly stated that I had never done that before, but they painted a rosy picture, saying that if I really was not suited to it after joining, I could transfer to the execution department. They also said that a supervisor would teach me step by step after I joined. Only after starting did I realize they were playing word games: there was no opening in the execution position at all, and there was no supervisor to teach me how to write proposals. Basically, if you were not suited to the job, you were told to get lost. The proposal supervisor in the same team slept at work, browsed online shops, and watched esports competitions instead of doing any work. The boss was just as bad. For one tender project, they would sometimes ask people to write it and sometimes say not to; everything was repeatedly delayed, then they would pressure everyone to meet the schedule in the final two days and even add other tasks. The budget was pitifully low, yet they demanded an elaborate presentation. There was nowhere to turn for help; raising problems only resulted in the person who raised them being punished. From beginning to end, the boss never reflected on having lured people into joining by playing word games, causing them to reject how many offers and suffer how much loss. They repeatedly went back on their word and did not think they had done anything wrong. The company systems were full of loopholes. Meetings were extremely inefficient, with people saying a sentence here and there and dragging on until the end of the workday. For that miserable salary, there was an enormous amount of work. In the end, I realized they simply wanted to use a low salary to buy someone who could do everything. It was an all-responsibility arrangement with a salary of only 32,000, no year-end bonus, no holiday bonuses, no overtime pay, and no meal allowance. If you had to deliver things to government agencies, there was no transportation allowance or reimbursement whether you took the MRT or rode a scooter. The person who slept at work earned 38,000. All I can say is, the place was unbelievably awful.