Before going to the career part, a sign that you can recognise a “strong Saturn” is that even if there are empty seats in the bus, train, or metro, that person stands. He’s extremely down-to-earth. It’s not that he does not like to sit.

1/ When he sits, he falls asleep. (If you are familiar with the Vedic Concept, you understand why this happens)

2/ He thinks there might be others who enter the bus, the metro, later, who need that seat more than him. He’s young and can stand on his two feet; therefore, he leaves the seats for others.

A strong Saturn in a horoscope means the person is ready to do the work. Even if nobody else wants to do it, they will go the extra mile to do it. To compare with another person who does not like to work but goes around and asks people for help all the time. We all know who is likely to be more successful.

I invite you to look closely at the successful people’s lives, who encourage others to Work Smart, rather than Work Hard. They are successful in working smart because they don’t work less than 10 hours/day. Keep that in mind!

General Effects on Career according to the House Placements of Saturn alone in a house in a Vedic Birth Chart

The Moon should NEVER EVER be on the opposite side, aspecting Saturn, and no other affliction or retrograde.

1/ 1st House

• Mostly good and wealthy if the horoscope belongs to Libra, Sagittarius, Capricorn, Aquarius, and Pisces Ascendant/Laga

2/ 2nd House

• Struggles in finance at the birthplace due to relationship matters

3/ 3rd House

• Good for a career, but a difficult life

4/ 4th House

• Mental peace is disturbed.
• If Saturn happens to be the Lord of the 6th, 8th, and 12th placed in the 4th, the result is very bad.

5/ 5th House

• Loss of wealth
• Except for Aries, Taurus, or Libra Ascendant/Lagna

6/ 6th House

• Generally good
• Very Good if Saturn’s the Lord of the 6th, 8th, or 12th

7/ 7th House

• Career-wise, it’s good for Aries, Taurus, and Libra Ascendant/Lagna

8/ 8th House

• Good if Saturn is the Lord of the 6th or the 12th

9/ 9th House

• Good for Taurus, Gemini, Libra, Capricorn, and Aquarius Ascendant

10/ 10th House

• Good for Aries, Taurus, Libra, Capricorn, or Aquarius Ascendant

11/ 11th House

• Good for Aries, Taurus, Libra, Sagittarius, Capricorn, or Aquarius Ascendant

12/ 12th House

• Very good if Saturn is the Lord of the 6th, 8th, or 12th House

A Strong Saturn indicates a hardworking personality, which does not always mean wealthy materially. Hard work usually pays off in the later part of life.

Here are some general points. The strength of a planet must be seen with other planets in a horoscope. 
The whole horoscope must be checked carefully.