also: ろうくみ
The labor union is demanding a wage increase.
彼は労組の委員長に選ばれた。
He was elected chairman of the labor union.
The employees formed a new labor union.
He joined the labor union soon after joining the company.
The company negotiated with the labor union over pay raises.
組合 is a broader term for any association or cooperative, whereas 労組 specifically refers to a labor union.
労組 (labor union) and 労災 (workers' accident compensation insurance) share the 労 kanji and labor-related context but refer to completely different things.
労組 is the common abbreviation for a single labor union, whereas 労連 specifically denotes a federation uniting multiple unions.
joint labor union; joint labour union
Standard abbreviation for 労働組合. The reading ろうそ is the most common.
Alternate reading ろうくみ is occasionally encountered but much less common than ろうそ.
Abbreviation of 労働組合 (ろうどうくみあい), formed by taking the first character of each component.