Left: unit-weighted spectral coadditions of VVDS spectra of galaxies detected in at least one SPIRE band at ≥3σ for three different luminosity bins. Each coadded spectrum contains ~50 galaxies, with only VVDS galaxies being used as ORELSE galaxies comprise only ≲5% of any given sample. Important spectral lines are overplotted and spectra are offset vertically for clarity. Though all L_TIR subsamples of the full SPIRE sample show strong [OII] emission and strong Balmer features, which indicate significant ongoing star formation, the subsamples also show marked differences. Right: differenced coadded spectra of the three L_TIR subsamples. The high-L_TIR subsample appears to be comprised of galaxies which, on average, have stronger [OII] emission and much stronger Balmer absorption features than either of their lower-L_TIR counterparts. Also clearly visible are weaker features associated with older stellar populations (CaII H&K and G-band) in the average high-L_TIR galaxy relative to the other two L_TIR samples. The average galaxy in the moderate-L_TIR subsample largely continues this trend relative to that of the low-L_TIR subsample.