Learn Spanish (Spain): No creo que esté atareado; simplemente no quiere descolgar. - I don't think he is swamped, he just doesn't want to pick up.

To guess that someone is currently busy, you use the future tense: Estará atareado. If you want to use the future continuous to emphasize an action happening right now, you could say Estará trabajando mucho (He must be working a lot). However, our actual sentence uses no creo que (I do not think that), which blocks the future tense and forces us to use the subjunctive esté instead.

Why do we use the subjunctive esté instead of the indicative está here?

The phrase no creo que (I do not think that) is a classic subjunctive trigger. Verbs of belief, like creer and pensar, take the normal indicative when they are affirmative because you are declaring what you believe is true. When negated, they require the subjunctive because you are denying or casting doubt on a reality.

Descolgar literally means 'to unhang.' Why does it mean 'to pick up' here?

In Spain, descolgar is the everyday way to say 'to pick up the phone' or 'to answer a call.' The word survives from the era of traditional landlines, where the phone receiver physically hung on a wall hook or rested on a cradle.

Is the adjective atareado built directly from the noun tarea (task)?