No, both disputes are focused on the preservation of members' jobs. That is the purpose of a union.
I agree but only to a point. The purpose of the union became much more than jobs. I learned, before I started the railway, that without someone to protect the industry you are working in. Your rights as an employee and your workplace conditions can be sacrificed at the drop of a hat without any oversight. Management can literally do anything they want without penalty.
I worked many years in retail. Zero hour contracts are rife and they can be seriously abused. Personally I see the good in them but many places really do use them to both abuse staffing levels and as a mechanic to avoid those little things. Like pensions, sick pay, holiday pay, in work benefits, overtime rates etc. I saw the industry make changes to employment contracts specifically to screw staff over and I saw the decline of any real employment rights. It became a shut up and do what your told place to work. If you don't like it, leave. I should know. I was Management.
I have friends in other industries where they are non unionised and the number of complaints about working practices, safety shortcuts, bullying culture, lack of equality, and no pay rises in X years. They have no union, and Management do what they wish.
I discovered unions a few years back in another employment. I found that I was treated differently. The place I worked was more rules bound, my contract wasn't broken just because, My working hours came down (or at least became more fixed) and the equipment I used was safer and actually worked for a change.
Then I joined the Railway. Ho Le Fuk. A union that worked alongside Management. A union that worked with the industry safety bodies. A union that helped reduce incidents. A union that protected the entire workforce (one rule for all, not just members). A union who helped push the industry forwards. You know what. For the first time in my employment life I actually got a regular pay rise. I have still been asked to compromise safety rules but I can be resolute in a firm no because I know the union has my back. Management still push and still fight for reduction in conditions and still try to circumvent employment law, but the union is preventing them.
Unions are more than jobs.