Centesimus annus
   Chap., §
 1   1,  7  |    are commonly called trade unions: certainly not because of
 2   1,  7  |     Indeed, the formation of unions "cannot ... be prohibited
 3   2,  15 |   society. The role of trade unions in negotiating minimum salaries
 4   2,  15 |  once more the role of trade unions, not only in negotiating
 5   2,  19 |    the freedom to join trade unions and the effective action
 6   2,  19 |      the effective action of unions, the assistance provided
 7   4,  35 | justice on the part of trade unions and other workers' organizations.


Laborem exercens
   Chap., §
 8   4,   20|            20. Importance of Unions ~All these rights, together
 9   4,   20|   are called labour or trade unions. The vital interests of
10   4,   20|  organizations. ~In a sense, unions go back to the mediaeval
11   4,   20|      of their work. However, unions differ from the guilds on
12   4,   20|  essential point: the modern unions grew up from the struggle
13   4,   20|   own rights. Thus there are unions of agricultural workers
14   4,   20|  teaching does not hold that unions are no more than a reflection
15   4,   20|   good. However, the role of unions is not to "play politics"
16   4,   20|   commonly understood today. Unions do not have the character
17   4,   20|  thanks to the work of their unions, workers will not only have
18   4,   20| respect. ~One method used by unions in pursuing the just rights


Sollicitudo rei socialis
   Chap., §
19   3,  15 |      to organize and to form unions, or to take initiatives