Document every aspect of YOUR (and separately your spouse's) working life and income during your stay in Switzerland. Make columns to reflect when you were working (every single job) and how much you earned. Also demonstrate that you have properly paid tax, social security contributions, and pension plan contributions.
Tax
Your husband's permit status will have determined whether or not source tax was deducted from your wages/salary. If he is Swiss, or holds a C-Permit, your employers would/should not have deducted tax from your income. If he has a lesser permit such as B or L, your earnings would habe been taxed at source (pay as you go). If you do not have a copy of your joint tax return for every year in which you've lived here, you could ask at the tax office for a copy. There, you should see your income and that of your husband reflected separately.
Social Security (also known as "First Pillar" (erste Säule)
This is managed by an office called SVA (in the German-speaking cantons). You can ask them for a statement of your contributions. I believe they can also give a statement of your husband's contributions. I am not sure you're entitled to his information, but I think yes. This is because, when a couple divorces, their Social Security is re-calculated.
Pension Scheme (also known as "Second Pillar" (zweite Säule)
This is a private scheme that is compulsory for employers who earn beyond a certain low level. You and your husband should each have a penion plan with your respective employers. These contributions, too, are split upon divorce. This is mandated by law. Each spouse is apportioned half of the other spouse's accumulated pot. You could write to both pension plans and state that the marriage might be dissolved through divorce, and ask for a current statement.
Third Pillar
These are your and your spouse's private savings and investments. They are divided into 3a (blocked until retirement age) and 3b (freely disposable). As far as you have signatory power over these accounts and investments, obtain statements of all of these, too.
The reason I recommend your doing this is not only to save on lawyers' fees (no reason to get a lawyer to write these letters when you can do that yourself), nor only to help you get the legally prescribed division, but also to enable you to demonstrate that your stay in Switzerland has been conducted properly such that there are no disadvantages to Switzerland.