Different circumstances, but my last boss was super trigger happy when it came to firing guys. The more seniority you had, the less chance you had of getting fired, but in 14 years working for him, I missed work twice due to illness.most times, I'd work through sickness or injury. I was that paranoid about it. I tore my hamstring one year and refused to even tell him about ( my job is physically demanding) because I knew he wouldn't let me work, and I refused to miss time. I don't care how long a person works for an employer, I do not trust any company. I've known way too many people who've gotten screwed by their employer after working for them for 20 or more years.