During a recent review of the NLRB dockets, I came across an interesting filing.  The Sheet Metal Contractors Association (SMCA), who is the multi-employer association that bargains with Sheet Metal Workers Local 19.  Local 19 has apparently filed an unfair labor practice charge against it.  The docket is scant on precise details but it appears to be an issue over SMCA refusal to bargain with Local 19’s .  Many collective bargaining agreements expire this year.  If Local 19’s is one of them it would likely expire on April 30.  The union’s charge could indicate problems between Local 19 and the SMCA over the terms of a new agreement.  If an agreement cannot be reached by that date, it could mean Local 19 will strike, which would impact several projects in Philadelphia.  This is worth keeping an eye on.