Since vs. for

 

since

 

At times, I have heard: “I’ve been working here from 2015.”

Actually it should be: “I’ve been working here since 2015.”

Or one can say: “I’ve been working here for two years.”

Here is how since and for are used:

since + point in time       (since 1906)

for + period of time        (for 10 years)

We do use from with time expressions, but in a different sense. Here are some examples:

The conference starts from tomorrow. 

The shop is open from 9:00 am to 5:00 pm. 

And yes, by now you know why the ad is correct: Trusted since 1906.

In fact, from now on, you know the difference between since and for.