Source and limitations for the competitors of the National Skills Competition are as follows:
1. The first 5 places of each skill category in the regional skills competition of the year recommended by the host, whose scores are above 60.
2. The first 3 places of a relevant skill category in the skills competition nationwide senior high schools of the year recommended by the authority in education. However, in case there are 2 or more skill categories that are equivalent to 1 skill category in the National Skills Competition, 2 contestants for each of the 2 skills categories and 1 contestant for each of the 3 skills categories shall be recommended.
Competitors of each skill category shall be R.O.C. nationals and be recommended by the nominating units. After signing up, the competitors shall not alter the nominating units. Those who apply after graduating or quit, shall apply for mutual nomination, including institutions, schools and their affiliate units with qualification of corporations, groups, companies, enterprises and vocational training institutes.
To participate in a group, members shall not have won one of the first three places in the National Skills Competition. Name list of the groups shall not be altered after signing up.

Competitors with an Identification Card for the physically and mentally Challenged shall sign up at the host organization to participate in the National Skills Competition for the Physically and mentally Challenged. However, should the number of competitors for each skill category exceed the capacity of the competition site, a test shall be carried out to determine qualification

All competitors under the age of 21 getting the first 3 places in past National Skills Competitions who have not represented the country to participate in the same skill category of the World Skills may sign up for the Competition for Selecting Competitors of the National Team of the World Skills Competition. But the scores of the Competition for Selecting Competitors shall not be recorded in the present competition.
With respect to the age limit, regulations of the World Skills Competition, if any, shall govern.

All competitors getting the first 3 places in past National Skills Competitions for the physically and mentally Challenged in the past ten years who have not represented the country to participate in the same skill category of the Vocational Skills Competition of the International Abilympic Federation may sign up for the Competition for Selecting Competitors of the National Team of the Vocational Skills Competition of the International Abilympics. But the scores of the Competition for Selecting Competitors shall not be recorded in the present competition.