A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
A player, 4 March 2015
It's not really question. Rather rules/design note.
Since introduction of Interrupts they have to fulfil RoL. Which, with combination with Forifications mechanics, literally means that Labor Crew can only prevent movement from current battlefield (at province with LC attached) to another battlefield, as you can only target cards at current battlefield unless specified different. Labor Crew text cannot, according to my knowledge of current rules and ruling history, qualified as such specification. Especially that it is technically possible to use it against "movement to other attackign army from current battlefield" (e.g. with Ring of Water), so it does not suggest in it's wording that targeted Personality has to (or even can) be home or elsewhere.
Except, of course, commons sense and estimation of card "powerlevel" - it's hard to believe that designers intended this fortification to be only tool of preventing attackers escape to another battlefield I suspect that phrase "at/from any location" should be inserted to make this Holding work as intended (of course I do not know real intentions behind this card, but as a L5R player I can suspect it).
Interrupt, Negate a target Personality's movement into an attacking army.
0.2. To be legally targeted by an action during battle, any cards in a unit must be at the current battlefield
Alex Jones (rules official), 19 May 2015
It's not really question. Rather rules/design note.
Since introduction of Interrupts they have to fulfil RoL. Which, with combination with Forifications mechanics, literally means that Labor Crew can only prevent movement from current battlefield (at province with LC attached) to another battlefield, as you can only target cards at current battlefield unless specified different. Labor Crew text cannot, according to my knowledge of current rules and ruling history, qualified as such specification. Especially that it is technically possible to use it against "movement to other attackign army from current battlefield" (e.g. with Ring of Water), so it does not suggest in it's wording that targeted Personality has to (or even can) be home or elsewhere.
Except, of course, commons sense and estimation of card "powerlevel" - it's hard to believe that designers intended this fortification to be only tool of preventing attackers escape to another battlefield I suspect that phrase "at/from any location" should be inserted to make this Holding work as intended (of course I do not know real intentions behind this card, but as a L5R player I can suspect it).
Errata has been issued to Labor Crew.