I don't have a fixed wage and my situation is very unstable.

我没有固定工资，我的状况也不是很稳定。

youdao

The government has fixed a minimum wage for temporary work, to stop eastern undercutting.

ECONOMIST: Germany's labour market

In the long term, living with a fixed exchange rate demands wage and price flexibility.

ECONOMIST: Exchange rates

Under 5% of the US wage earners make the minimum wage or less, which means that since wage earners only represent a bit over half the total work force (the rest are paid a fixed salary), those who earn the minimum wage make up less than 3% of the total work force.

FORBES: The Minimum Wage: Putting the First Rung on the Ladder of Success Out of Reach