There are 16 words that start with 'labor'.
| labor | labors |
| labored | laborer |
| laborers | laboring |
| laborite | laboredly |
| laborious | laborites |
| laboratory | laboriously |
| laborsaving | laboratories |
| laboriousness | laboriousnesses |
Note: These 16 words that start with 'labor' are found from the USA & Canada version of the tournament Scrabble word list.