Yes, you are working class.
if you work for a living (you receive a wage) and you don’t own or control capital.
If your employer gets more “value” from the work you do than you receive in wages, you’re working-class.
It is important to distinguish economic class (people’s relationship to capital and the “means of production” — how goods, services and profit are produced) from the sociologist’s “social class” — a hierarchical division of people (at its crudest, “upper,” “middle” and “lower” class) according to their income, lifestyle or tastes.
Don’t be fooled either by the fact that you and your partner own the home you live in.
Yours isn’t an investment property (the fact that you rent out a room to pay the mortgage is irrelevant) and you don’t make a profit on it so it isn’t “capital.”
And you don’t have to be in employment to be working class.
You could be unemployed for various reasons, including disability, but the chances are you’d still be dependent on others in work — if not directly (your family or friends), then (if you receive benefits) through other workers’ taxes. But you’d not be making a profit from their labour and you’d still be working class.
Today the working class, understood on these terms, constitutes upwards of 85 per cent of the population. Yes, you are working class.